Science Information

Veterinary Hematology 101; 2005 Abstract

Veterinary Hematology is more than just blood cells. Blood, highly functional and truly definitive, does much more than provide for the transport of cellular metabolites and waste products. Blood is made up of four major components: Plasma, Red Blood Cells, White Blood Cells, and Platelets.

Each component possesses its own diagnostic significance in the veterinary clinical setting.

Without blood, you have no viable mammal life. Therefore without blood, the clinician has no valid clinical picture of disease-state. To appreciate the value of blood, the clinician should examine each individual component of blood separately to gain an appreciation for the clinical significance and diagnostic value of veterinary hematology in their practice. Anemia will also be discussed.


Plasma carries blood and blood proteins. Aside from a high water content, plasma also contains dissolved salts, calcium, sodium, magnesium, and potassium. Plasma contains clotting factors and on exposure to air it will clot. Serum is the clear fluid that separates from clotted whole blood and clotted plasma. Plasma comprises approximately 20% of the animal body's extracellular fluid. Most plasma protein molecules are too large to pass through the capillary walls into the interstitial space. The small amount of protein that can pass through the capillary walls is primarily taken up by the lymph nodes and eventually returned to the circulation.

The Majority of the plasma proteins are produced in the liver. Plasma proteins form three major chemical groups (fractions) and have varying functions:

*albumin - approximately 60%

*fibrinogen - approximately 4%

*globulins - approximatly 36% over three subfractions (IgA, IgB, & IgG)

The relative proportions of plasma proteins can vary in certain diseases and these variations can be clinically useful in determining proper IV therapy. Albumin is the smallest of the plasma proteins and easily passes through capillary walls. In kidney disease, large amounts of albumin are excreted through damaged kidney tubules and can be detected in the urine.

Functions of the plasma proteins include:

Intravascular collid osmotic pressure. Maintains fluid and electrolyte levels.

Transport of insoluble substances allowed by protein binding processes

Contribution towards the plasma viscosity

Inflammatory response via microbe fighting antibodies

Protein storage reserve


Protection from infection via plasma gamma globulins

Plasma also contains inorganic ions, which are important in regulating cell function and maintaining homeostasis. As an example, depletion of potassium may occur following severe diarrhea and vomiting. Potassium is an essential element of cell excitability. Sharp decreases in potassium will cause muscle weakness and cardiac abnormalities. Similar problems may cause sodium depletion. Subtherapeutic sodium levels in the plasma will result in the volume of extracellular fluid to decrease which will lead to a drop in blood pressure causing lethargy, dizziness, weakness and fainting.

Plasma carries a wide range of substances including dissolved gasses left over from the respiratory exchange cycle (mostly CO2). Blood carries oxygen because it does not have an affinity for plasma related to its water solubility.

Nutrients, the most abundant being glucose, are carried in the blood plasma as a source of fuel for cellular metabolism. Amino acids, fatty acids, triglycerides, cholesterol and vitamins are also carried by plasma. Urea, uric acid, creatinine from the kidneys, bilirubin from the gall bladder and other waste materials are also transported by plasma. Plasma proteins carry hormones, such as cortisol and thyroxine. The plasma also carries certain drugs and ETOH.


Platelets are the result of cellular fragments shed from the megakaryocyte while in the bone marrow. Platelets considered cell fragments rather than actual cells, play a critical role in blood clotting. When an injury to the body occurs, a chemical substance is released at the site of injury.

Platelets are able to quickly adhere to this chemical and begin to form alliances with other platelets and clotting factors. This alliance is the body's defense against bleeding to death.

Platelets are also significant in forming diagnostic clues to the blood smear and can be useful at guiding the clinician in care planning, treatment and further diagnostic steps. Platelet morphology together objective data can be indicative of bleeding disorders and leukemia.


Red Blood Cells, seemingly basic, are created and have the sole purpose of keeping the mammal alive by carrying oxygen to the tissues and white blood cells out of the bone marrow and into circulation. Red Blood Cells along with other blood components are present in nearly every portion of the body. When there is not enough blood in the body, anemia occurs and the animal begins to have clinical signs. It becomes imperative that clinicians immediately identify the etiology of anemia in order to help define or refine treatment. In doing so, the clinician will examine the blood smear and available objective data in order to quickly determine whether the anemia present as defined by a low pack cell volume (PCV) is one of production, consumption, sequestration or destruction. We will be discussing the cellular size, shape, color and other diagnostically significant data present in various states of anemia to aid the clinician in accurate slide evaluation.


The white Blood Cell (WBC) plays an important role in the animal body by providing our bodies

with a weapon to fight against infection and disease. The primary function of the WBC is served mostly after it leaves the marrow and enters the blood stream after being carried by the RBC from its site of formation in the marrow, to its site of labor in the blood stream. There are five types of white blood cells seen in blood and each has different roles to perform.

The Neutrophil

The neutrophil, in conditions of health and certain disease, is usually the most common granulocyte found in blood. The cytoplasm of the neutrophil contains three differing types of granules. It is these granules that result in it being termed a granulocyte. Neutrophils generally have segmented or hyper-segmented nuclei giving them the appearance of being mutlinucleated.

In fact, they are not multinucleated as a thin strand of chromatin connects each lobe of the prominent dark purple, multilobed nucleus. At times, this chromatin strand can be visualized by most microscopes, when care is taken to look for it. Sometimes however, the strand becomes obscured by parts of the nuclei itself as a result of cell orientation and smear technique.

The three type of granules seem in the cytoplasm of the cell perform specific functions.

Primary granules are non-specific and contain lysosomal enzymes, defensins, and some lysozyme. The granules are similar to lysosomes. They stain violet in color when prepared with Wright's stain or Diff Quik. The enzymes produce hydrogen peroxide, which acts as a powerful antibacterial agent.

Secondary granules, found in the cytoplasm of the neutrophil, stain neutrally a light pink. They contain collagenase, which helps the cell to move through connective tissue, and deliver lactoferrin, which is toxic to bacteria and fungi.

Tertiary granules have only recently been appreciated as a granular component to granulocytes.

They are thought to produce proteins, which help the neutrophil to stick to other cells and hence aid the process of phagocytosis.

Neutrophils, once they arrive at an area of infection, respond to chemicals (called chemotaxins which are released by bacteria and nectrotic tissue cells) and travel towards the area of highest concentration of infection or necrotic tissue. Once they arrive at their destination, they begin the process of phagocytosis in which the offending cells are engulfed and destroyed by powerful enzymes. This process requires much energy, so the glycogen reserves of the neutrophil are soon depleted and the neutrophil promptly dies soon after the phagocytotic process. When neutrophils die, their contents spill out into the blood stream and remnants of their enzymes cause liquefaction of closely adjacent tissue. This results in an accumulation of dead neutrophils, tissue fluid and abnormal materials that is known as pus.

The Eosinophil

Eosinophils appear as the most colorful portion of blood and as a primary function, provide for a defense against the larvae of parasitic worms and unicellular organisms. Eosinophil granules contained in the cytoplasm contain a substance called MBP (major basic protein) which is toxic to many parasitic larvae. Eosinophils have surface receptors for the antibody Immunoglobulin E (IgE). These receptors are not found in other white blood cells and are believed to be of importance in their role at fighting parasitic infection.

The number of Eosinophils in peripheral blood circulation increases in some allergic conditions.

Numbers of Eosinophils increase in the peripheral blood smear when nasal and bronchial mucosal linings are irritated in asthma, brochitis, hay fever and certain adverse drug reactions.

Eospinophils are believed to neutralize the effect of histamine.

Eosinophils also have a marked tendency in number to be highest in the morning and lowest in the afternoon3 in the canine and feline.

The Basophil

The Basophil is rarely seen on periphral blood smear in cats and dogs is defined by its large cytoplasmic granules, that usually obscure the nucleus of the cell. They are similar to mast cells and become mast cells upon leaving the blood and entering the tissues.

Both basophils and the mast cell contain selective receptors for IgE that is produced in response to various allergens.

Response to specific allergens by the basophil is quick and results in expulsion of the cells granular contents, which contain histamines and vasodilating agents. This is another reason that contributes to the basophil not being readily present in the peripheral blood smears of cats and dogs. The result of a basophilic response creates an immediate state of hypersensativity in the animal. This can result in hay fever, asthma, urticaria, and most seriously, anaphylactic shock.

The Monocyte

The Monocyte is the largest cell type seen in peripheral blood smears. The nuclei is not multilobular, but appears deeply indented (kidney bean shaped) or U-shaped (horse-shoe shaped). The chromatin appears reticulated. The cytoplasm of monocytes contains many lysosome granules which give it a standard grayish-blue color in most instances. Monocytes form part of a cellular alliance that has been described as the monocyte-macrophage system3. This system is made up of bone marrow precursor cells, such as monoblasts and promonocytes, as well as circulating monocytes containing free and fixed tissue macrophages.

Monocytes become tissue macrophages and remove dead cell debris when they leave the bloodstream. They also attack organisms and certain fungi. Organisms and fungi affected by the monocytes are those which cannot be destroyed by the neutrophil. Unlike neutrophils, monocytes are able to regenerate the contents of their lysosomes and thus live longer. Cell types that are derivatives of the monocyte include: Kupffer cells of the liver, sinus cells of the spleen and lymph nodes, pulmonary alveolar macrophages, as well as free macrophages in the synovial, pleural and peritoneal fluid.

The Lymphocyte

Types of Lymphocytes include the Small Lymphocytes, K-Lymphocyte, B-Lymphocytes and (Helper) T-Lymphocytes.

Small lymphocytes are produced in the lymph nodes and spleen are similar to all the lymphocyte types but differ in the location in which they sequester for their function.

Helper T-Lymphocytes originate in the thymus and produce long living T-Cells which become Killer T-Cells or K-Cells which mediate antibody dependent cell cytotoxicity (tumor rejection).

B-Lymphocytes are localized in the corticomedullary region of the lymph nodes and are made up of cells of the germinal centers of the cortex in lymph nodes, in the red pulp of the spleen, and in the submucosal regions of the stomach and respiratory tract.

Lymphocytes, distinguished by having a deeply staining purple nucleus that is sometimes eccentrically located, usually contain a relatively small amount of cytoplasm. The small ring of the cytoplasm contains numerous ribosomes and readily stains blue with Wright's Stain or Diff-Quik. Small numbers of granules may also be noted in the cytoplasm randomly.

Lymhpocytes increase in number as a response to viral infection. The small lymphocyte will approximately the same size as the normocytic RBC. The cytoplasm is often not visible because it is obscured by the nucleus of this cell. This cell is definitively round under examination and lacks "divets." There can be variations in the size of the lymphocyte in the k-9/f-9 with the small type usually being the predominant type. In the small lymphocyte the chromatin is usually so coarse that it is masked. The medium and large forms of the lymphocyte often appear smudged.

Lymphocytes will increase in number with restraint: physical or chemical, and you will usually notice a corresponding increase in PMNs.


Anemia is defined as a below standard hematocrit (HCT). A species specific hematocrit1 is as follows: Dog: 37-55, Cat: 24-45, Horse: 32-52, Porcine: 24-46, Bovine: 24-46. There are further variations of this data available that are further differentiated on the basis of age and sex. The author uses a combination of sources, which he has found through experience to be clinically reliable and accurate.

Most anemic conditions (except hemorrhage anemia) can be ordered to have an etiology of consumption, production, destruction or sequestration and further differntiation of anemic types are considered by ascertaining variation is size, shape, color.

Anemias of consumption include the hemolytic anemias and those created by disease conditions should as DIC and parasites where platelets and other clotting factos are consumed. Some anemias which sequester platelets and blood to the spleen, have also been placed in this classification, but etiologic differentiation has been found to be of clinical significance.

Anemias of destruction such as Autoimmune Mediate Hemolytic Anemia (AIMHA) exist when the body's own antibodies destroy its own red blood cells.

Whether or not you use your own in-house clinical lab or send your specimens out to a reference lab, this lecture will bring you back to the basics and help you remember that which you may have forgotten in school. Many clinicians find this lecture and format helpful to expand on basic knowledge and clinically apply what they see either under the microscope or on the lab report.

Not having adequately available time to donate towards the lab, more clinicians are relying upon technicians to interpret laboratory results being unsatisfied with the time investment required to await the return of results from distant reference labs. Clinics and hospitals are using this author's methods for training their staff to facilitate the clinician having more time to provide for patient and client care, thus increasing value added service and customer satisfaction.

1. OW Schalm, et al. Veterinary Hematology, 3 Ed., Lea & Febiger 1975

2. Bernard Feldman, DVM various works

Interactive Veterinary Forum
Back to
Back to Integrated Health Technologies Corporation
Back to
Back to Back to

Biography of Lon Bartoli, BSN, AHT, VCLS

Lon Bartoli, the author of Veterinary Hematology 101:A Pocket Reference Guide and several abstract form titles, is currently pursuing his lifelong dream of working in emergency services and teaching.

As a professional firefighter I & II/EMT-I, Lon Bartoli holds a bachelor's degree in Business Management as well as a bachelor's degree in Nursing Science. He has worked in veterinary medicine, (human) critical care nursing, EMS, business management, the insurance industry and fire science. Since 1991, he has been arduously involved in clinical laboratory science and is now considered by many in the profession as a guru in the clinical laboratory setting.

Lon has been recognized as the Montana Coordinator for the Back To Sleep - SIDS foundation which provided public service information geared towards helping to decrease the number of SIDS.

To amp up solar cells, scientists ditch silicon  Science Magazine

Silicon dominates the world of solar power. Even the newest solar cell designs, tandem devices that have a silicon solar cell below a cell made of a crystalline ...

Scientists restore some cellular functions in dead pig brains  Science Magazine

Dead pig brains regained some cellular functionality using a new system that bathed them in a synthetic cocktail of nutrients and preservative chemicals, The ...

What is open science?

It's like open data, but for research. Organizers of the R-Ladies Philly meetup offer an explainer based on talks from their most recent meetup. What is open ...

Engineering researcher uses network science to understand how materials work  Science Daily

Using network science -- part of a larger mathematical field called graph theory -- a professor mapped long range atomic forces onto an incredibly complex ...

Scientists take DNA test, learn they’re cousins who’ve collaborated in science journal  The Next Web

When people submit their DNA to companies such as 23andMe for testing, they're usually not too surprised to find out they have relatives they haven't met.

Scientists Uncover California's Hidden Earthquakes  Scientific American

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the ...

How US–China political tensions are affecting science

Conference travel, research visas, science funding and security clearance are all touched by the geopolitics.

A United Europe Benefits Global Science, Say EU Geoscientists  Eos

European geoscientists recently called for integration and cooperation between member states of the European Union (EU) to benefit global scientific research ...

National University of Columbia Joins Blockchain Global Consortium for Science  Cointelegraph

News. The National University of Columbia is joining the global blockchain consortium for science dubbed Bloxberg, Mauricio Tovar Gutiérrez, co-director of the ...

The heart and science of kindness - Harvard Health Blog  Harvard Health

Acts of kindness -- to loved ones, to strangers, to ourselves -- make the world a warmer place. And seeking ways to be kind can make you happier, too.

LI students compete in science and engineering fair  Newsday

Twenty-three students with top projects at the Long Island Science & Engineering Fair are advancing to compete at the international level. First-place winners in ...

Scientists speak up at Stanford  Stanford University News

A new graduate student initiative is combating misinformation around science by helping Stanford students and postdocs improve their communication skills.

#MeToo controversy erupts at archaeology meeting  Science Magazine

When Norma Johnson, a graduate student in archaeology at the University of Alaska in Anchorage (UAA), walked across the convention center floor to get ...

Interactive Science Spectacular Attracts Community  The Dickinsonian

Carlisle town members and Dickinsonians explored the mysteries of astronomy and physics at the annual Science Spectacular, co-hosted by the physics, earth ...

Festival of Faiths embraces religion and science to bring enlightenment  Courier Journal

Come contemplate the intersection of faith and science at this year's Festival of Faiths held April 25-27 at the Kentucky Center for the Arts.

Unbiased detection of CRISPR off-targets in vivo using DISCOVER-Seq  Science Magazine

Unintended genomic modifications limit the potential therapeutic use of gene-editing tools. Available methods to find off-targets generally do not work in vivo or ...

Second NASA Astronaut to Spend Nearly a Year in Space — For Science

NASA astronaut Christina Koch will spend nearly a year in space, the agency announced Wednesday (April 17), and that will offer scientists much-needed data ...

Glowing genitalia reveal the identity of mysterious millipedes  Science Magazine

Some insects are easy to tell apart. Others, not so much. Some flat-backed millipedes in the genus Pseudopolydesmus look almost identical regardless of their ...

A genetic scorecard could predict your risk of being obese  Science News

A genetic score predicts who is at risk of severe obesity, but experts say lifestyle matters more than genes.

‘Partly Alive’: Scientists Revive Cells in Brains From Dead Pigs  The New York Times

In a study that upends assumptions about brain death, researchers brought some cells back to life — or something like it.

Can science survive without statistical significance?  Science News

In science, the success of an experiment is often determined by a measure called “statistical significance.” A result is considered to be “significant” if the ...

Women scientists get the Wikipedia pages they deserve thanks to UNC's Science Library  The Daily Tar Heel

UNC's Kenan Science Library hosted its fourth annual Women in Science Wikipedia Edit-a-thon this week. Participants gathered Wednesday from 5 to 8 p.m. to ...

New climate models forecast a warming surge  Science Magazine

For nearly 40 years, the massive computer models used to simulate global climate have delivered a fairly consistent picture of how fast human carbon emissions ...

Cheap, portable scanners could transform brain imaging. But how will scientists deliver the data?  Science Magazine

Q&A with neuroethicist Francis Shen and MRI developer Michael Garwood.

Urine salts elucidate Early Neolithic animal management at Aşıklı Höyük, Turkey  Science Advances

The process of sheep and goat (caprine) domestication began by 9000 to 8000 BCE in Southwest Asia. The early Neolithic site at Aşıklı Höyük in central Turkey ...

Scientists successfully revive brain cells in dead pigs  Mashable

Scientists at Yale recently experimented with restoring function in the blood vessels of a deceased pig's brain.

Astronomers have spotted the universe's first molecule  Science Magazine

The universe's very first molecule, thought to be created after the big bang, has been detected in space for the first time. Helium hydride (HeH), a combination of ...

Former CSIRO researcher accuses science agency of pro-alcohol research  The Guardian

Exclusive: Dr Saul Newman says public money is used to subsidise an industry with 'devastating effects on global health'

In Cuba, Science Gives Goliath Grouper a Second Chance  The Pew Charitable Trusts

Goliath grouper are curious and fearless, characteristics that have made them easy targets for fishers, especially when the fish gather in large numbers in July ...

Warm, dry winds may be straining Antarctica's Larsen C ice shelf  Science News

Wind-induced melting that occurred during the Antarctic autumn may be accelerating the Larsen C ice shelf's collapse, which could raise sea levels.

Team proposes plan to use bioinformatics, open data to boost science in developing countries  UCLA Samueli School of Engineering Newsroom

UCLA computer scientists and their collaborators have devised a plan for the use of cloud computing and big data analysis to allow scientists in developing ...

‘Strange Angel’ Season 2 Trailer: Science-Occult Mash-Up Continues  Deadline

Period drama Strange Angel is back for its season two on CBS All Access as of Thursday, June 13, once again exploring the bizarre true story of Jack Parsons, ...

Course to Launch in Fall Dives Into Weeds of Cannabis Science, Culture  Cornell University The Cornell Daily Sun

Plant Science 4190: Cannabis: Biology, Society and Industry will be offered in Fall 2019 by Prof. Carlyn S. Buckler, plant science. The course will explore the ...

Millipede Genitals Glow Different Colors (But Scientists Can't Explain Why)  Live Science

Scientists recently discovered that numerous millipede species fluoresce, and the glow of their genitals varies between species.

NASA Psyche Spacecraft Bound for Metal Asteroid | Science  Smithsonian

The Psyche spacecraft, headed to an asteroid with the same name, will explore a metal world thought to be the leftover core of a destroyed planet.

Spontaneous behaviors drive multidimensional, brainwide activity  Science Magazine

How is it that groups of neurons dispersed through the brain interact to generate complex behaviors? Three papers in this issue present brain-scale studies of ...

Three tips for giving a great research talk  Science Magazine

In this Letter to Young Scientists, our columnists share advice for communicating your research clearly and compellingly.

Africa's largest mammalian carnivore had canines 'the size of bananas'  Science Magazine

When paleontologists dug up the bones of Africa's largest carnivore in the early 1980s, they had no idea what they had found. So many other fossils littered the ...

Baby tyrannosaur's eBay auction sparks outrage  Science Magazine

It's astonishing what you can buy on eBay. An ongoing auction on the site offers buyers the chance to own what is claimed to be “maybe the only” juvenile ...

Axios Science - April 18, 2019  Axios

Thanks for subscribing to Axios Science. Please consider inviting your friends, family and colleagues to sign up. I appreciate any tips, scoops and feedback ...

The Scientist Fighting the Dumbest Kind of Bad Science Reporting on Twitter  Gizmodo

Late last week, a Twitter account highlighting one of the cardinal sins of bad science journalism popped up online, catching the eye of scientists, reporters, and ...

Archaeological society tries to stem continuing controversy over #MeToo scandal  Science Magazine

The Society for American Archaeology (SAA) continues to battle fallout for the way it handled a #MeToo scandal at its annual meeting last week.

Is Dentistry a Science?  The Atlantic

It's much less scientific—and more prone to gratuitous procedures—than you may think.

Powerful CRISPR cousin accidentally mutates RNA while editing DNA target  Science Magazine

When researchers first reported 3 years ago that they had created base editors, a version of the powerful genome-editing tool CRISPR, excitement swirled ...

Scientists 'Print' World's First Heart With Human Bioinks, Next 'Teach Them To Behave' Like Hearts  Forbes

The TAU researchers' heart is made from human cells and patient-specific biological materials which serve as the bioinks for 3D printing of complex tissue ...

New Twitter account outs shoddy reporting in science stories  Quartz

In this era of fake news, it's not unusual for social media users—including the US president—to accuse journalists of doing bad work. Sadly, when it comes to ...

College Students Hatch Nuclear-Powered Magnetic Plan to Protect Marsonauts from Cosmic Rays  Live Science

A team of undergraduate students at Drake University in Iowa is developing a magnetic shield to defend interplanetary astronauts from the intense cosmic ...

A Living 'Balloon on a String' Discovered in the Deepest Part of the Indian Ocean  Live Science

The depths of the Indian Ocean are home to some bizarre creatures — including one that looks like a balloon on a string. Explorers captured a video of this ...

Here's what scientists think a black hole looks like  Science Magazine

Astronomers may have imaged a black hole for the first time, capping decades of calculations of how they ought to appear.

Cool Science Radio - CMXTwenty, Cutting Edge Pain Control - Dr. Lane Brostrom  KPCW

Dr. Lane Brostrom, CEO of CMXTwenty, a private company, recently opening offices in the Park City area, that is developing a non-narcotic pain therapy to.

Scientists advance creation of 'artificial lymph node' to fight cancer, other diseases  Science Daily

In a proof-of-principle study in mice, scientists report the creation of a specialized gel that acts like a lymph node to successfully activate and multiply ...

Facebook invests to expand Northeastern computer science master's program for women and underrepresented populations  News@Northeastern

Facebook has invested $4.2 million to help expand a Northeastern University program that prepares people to switch careers into the technology sector and ...

Arc-continent collisions in the tropics set Earth's climate state  Science Magazine

On million-year time scales, Earth's climate state is determined by sources and sinks of carbon to the ocean-atmosphere system. But which specific mechanisms ...

Consuming personal genomics  Science Magazine

Personal genomics is enjoying increased visibility, yet much remains cloudy about its true potential. We see advertisements from direct-to-consumer companies ...

Shadowy first image of black hole revealed  Science Magazine

Two decades ago, Eric Agol, an astronomer at the University of Washington in Seattle, first modeled how a black hole's intense gravity would bend light around it ...

Archaeologists unearth largest Mayan figurine factory to date  Science Magazine

ALBUQUERQUE, NEW MEXICO—Archaeologists working in Guatemala have discovered the largest known figurine workshop in the Mayan world, they ...

The NASA Twins Study: A multidimensional analysis of a year-long human spaceflight  Science Magazine

Space is the final frontier for understanding how extreme environments affect human physiology. Following twin astronauts, one of which spent a year-long ...

Doubling up piezoelectric performance  Science Magazine

Piezoelectrics change in length when an electric field is applied, and good materials have large piezoelectric coefficients, the ratio of elongation to applied field ...

The winners: Cool Science Images 2019  University of Wisconsin-Madison

Ten images and two videos by University of Wisconsin–Madison students, faculty and staff have been named winners of the 2019 Cool Science Image Contest.

A 2014 meteor may have come from another solar system  Science News

Earth may already have been visited by an object from outside our solar system — a meteor that burned up in the planet's atmosphere in 2014, astronomers ...

Concerns of young protesters are justified  Science Magazine

The world's youth have begun to persistently demonstrate for the protection of the climate and other foundations of human well-being. (1, 2). As scientists and ...

Rare Kakapo parrot produces strong breeding season, scientists say  Fox News

The kakapo, a rare parrot that resides in New Zealand, has reportedly had quite a few babies as of late, marking an impressive mating season. Of the more than ...

Liquid blood taken from 42,000-year-old frozen horse that scientists hope to clone  Fox News

Scientists were able to extract liquid blood from the heart of a 42000-year-old foal that had been frozen and preserved in permafrost in Siberia.

These suicidal aphids repair their home with their own bodily fluids  Science Magazine

The gall aphid's home repair strategy gives new meaning to the phrase “sweat equity.” These insects use their own bodily fluids to patch holes in the walls of ...

Americans Are Smart About Science  FiveThirtyEight

Hey, didja hear about those scientifically illiterate Americans? People so dumb, they think the sun revolves around the Earth? People who can't pass a quiz of ...

'We can't take another hit like this': Brazilian scientists lament big budget freeze  Science Magazine

SÃO PAULO, BRAZIL—The latest federal budget news coming out of Brasília has Brazilian scientists fearing the worst. On 29 March, faced with a stagnant ...

The black hole image and Katie Bouman: the sexist backlash against her, explained

Just after the Event Horizon Telescope project announced last week that its astronomers had managed to capture the first-ever image of a black hole, MIT ...

Scientists decry USDA's decision to end cat parasite research  Science Magazine

For the past 37 years, a small research lab in Beltsville, Maryland, has been the world's leading hub for scientists working on Toxoplasma gondii, a parasite that ...

Men's beards carry more germs than dog fur, according to science  Honolulu Star-Advertiser

A new Swiss study has found that men with beards carry more germs than dogs. Sorry, hipsters. Study author professor Andreas Gutzeit told the BBC that the ...

Evidence for hormonal control of heart regenerative capacity during endothermy acquisition  Science Magazine

Among vertebrates, zebrafish and salamanders can regenerate their hearts, whereas adult mice and humans cannot. Hirose et al. analyzed diploid ...

Cascading impacts of large-carnivore extirpation in an African ecosystem  Science Magazine

War ravages human lives and landscapes, but nonhuman victims are no less affected. The Mozambican Civil War resulted in the rapid decline of predators in ...

‘I Want What My Male Colleague Has, and That Will Cost a Few Million Dollars’  The New York Times

Women at the Salk Institute say they faced a culture of marginalization and hostility. The numbers from other elite scientific institutions suggest they're not alone.

Ebola outbreak continues despite powerful vaccine  Science Magazine

Even a terrifically effective Ebola vaccine cannot stop an outbreak if nearly 20% of the people who most need it either cannot be reached or refuse to take the ...

We cheer on women in the sciences, but recruiting and retaining them is still a different story  CNN

A recent study shows that almost a quarter of women in STEM change career fields after having children. Why? Learn about current issues surrounding women ...

Israeli scientists print world's first 3-D heart - Science & Health  Haaretz

The future is here, and it's alive and beating. Scientists at Tel Aviv University have printed the world's first 3-D heart complete with blood vessels using ...

Update: Legislator asks Pentagon to restore contract for storied Jason science advisory group  Science Magazine

*Update, 11 April, 3:30 p.m.: The legislator who revealed the Pentagon's decision to terminate the Jason contract during a congressional hearing earlier this ...

Believe in Atlantis? These archaeologists want to win you back to science  Science Magazine

Researchers confront rising belief in ancient aliens and other myths.

Ideasroom Taxonomy - the neglected science of discovery The University of Auckland's Tom Saunders asks why we  Newsroom

The University of Auckland's Tom Saunders asks why we are standing by as taxonomy is gutted and left to wither.

You've accomplished more than you think  Science Magazine

Ph.D. students and postdocs have lots to offer potential employers, even if they don't recognize it, our advisers counsel in this Career Fable.

Who had the most merciful death on Game of Thrones? Science has an answer  Ars Technica

Physicist Rebecca Thompson weighs in on all your burning science questions for GoT.

Stoked on Science: Recreation for Revelstoke Kids  Revelstoke Review

Those of you who have read my articles before will know my background is in earth sciences, relating to the natural world and its interconnecting systems.

This fungus has wiped out more species than any other disease  Science Magazine

The infectious disease that has devastated the most biodiversity is a fungal killer of amphibians, researchers report today in Science . Around the world, 90 ...

Airborne microplastics found atop France's remote Pyrenees mountains  Science Magazine

Microscopic fragments of plastic have invaded the farthest reaches of the sea, from the depths of the Mariana Trench to the freezing waters off Antarctica. Now ...

Amphibian fungal panzootic causes catastrophic and ongoing loss of biodiversity  Science Magazine

Rapid spread of disease is a hazard in our interconnected world. The chytrid fungus Batrachochytrium dendrobatidis was identified in amphibian populations ...

Hazards of human spaceflight  Science Magazine

In Einstein's famous twin paradox, the effect of special relativity causes aging to slow in one twin during travel in a high-speed rocket through space while the ...

Human impact erodes chimpanzee behavioral diversity  Science Magazine

We often frame negative human impacts on animal species in terms of numbers of individuals reduced or numbers of regions from which species are absent.

Sydney Brenner, pioneer of molecular biology, dies at 92  Science Magazine

Sydney Brenner, the Nobel laureate whose studies on the roundworm Caenorhabditis elegans led to seminal discoveries in genetics and developmental ...

Sustained rescue of prefrontal circuit dysfunction by antidepressant-induced spine formation  Science Magazine

A better understanding of the mechanisms underlying the action of antidepressants is urgently needed. Moda-Sava et al. explored a possible mode of action for ...

Tweeting while flying kills migratory birds  Science Magazine

Texting while driving can be deadly. So can tweeting while flying, a new study finds—among some species of migratory birds. Researchers have found that birds ...

Hydrocarbon lakes on Saturn's moon Titan have disappeared  Science News

Three lakes on Saturn's moon Titan have pulled a vanishing act, a study finds.

Confirmed: New phase of matter is solid and liquid at same time  National Geographic

Solid, liquid, gas … and something else? While most of us learn about just three states of matter in elementary school, physicists have discovered several exotic ...

Autologous grafting of cryopreserved prepubertal rhesus testis produces sperm and offspring  Science Magazine

Before chemotherapy or radiation treatment, sperm from adult men can be cryopreserved for future use. However, this is not possible for prepubertal boys.

Boston University fires geologist found to have harassed women in Antarctica  Science Magazine

Boston University (BU) today fired David Marchant, the geologist whose alleged harassment of women at remote Antarctic field camps Science first described 18 ...

Here's How Scientists Turned the World Into a Telescope (to See a Black Hole)

Here's what goes into turning the whole planet into a massive Event Horizon Telescope, precisely the feat that was necessary to create scientists' first image of a ...

Meteor showers dig up water on the moon  Science News

Meteorites release water from the moon's soil, hinting that the moon has water buried all across its surface.

Scientists create a "lifelike" material that has metabolism and can self-reproduce  Big Think

Cornell University engineers have created an artificial material that has three key traits of life — metabolism, self-assembly and organization. The engineers ...

Ebola outbreak in Congo still not an international crisis, WHO decides  Science Magazine

No need to sound the world's loudest public health alarm bell about the lingering Ebola outbreak in the Democratic Republic of the Congo (DRC), an expert ...

High-fructose corn syrup enhances intestinal tumor growth in mice  Science Magazine

Obesity increases an individual's risk of developing many types of cancer, including colorectal cancer. One of the factors driving the rise in obesity rates is ...

Racial profiling harms science  Science Magazine

On behalf of the Society of Chinese Bioscientists in America (SCBA), the Chinese American Hematologist and Oncologist Network (CAHON), and the Chinese ...

New species of ancient human unearthed in the Philippines  Science Magazine

A strange new species may have joined the human family. Human fossils found in a cave on Luzon, the largest island in the Philippines, include tiny molars ...

home | site map | Xray Photography
© 2006