Microbes, Bacteria, Viruses

DNA on Earth is built from sugars with a property known as right-handedness. Though left-handed sugars aren't used by any known life, scientists can create them—but now, researchers say they shouldn't.

Scientists Warn of an 'Unprecedented Risk' From Synthetic 'Mirror Life,' Built With a Reverse Version of Natural Proteins and Sugars

So-called mirror cells could rampage through our ecosystems, food supply and immune systems, experts say, potentially without existing barriers to protect against them

Scientists have discovered the strongest evidence yet that healthy vertebrates can have brain microbiomes.

Fish Have a Brain Microbiome. Could Humans Have One Too?

The discovery that other vertebrates have healthy microbial brains is fueling questions about our own brains

A rock layer showing the S2 impact tsunami bed with chunks of ripped-up seafloor

A Giant Meteorite Ripped Up the Seafloor and Boiled Earth's Oceans 3.26 Billion Years Ago. Then, Life Blossomed in Its Wake

Geologists suggest the catastrophic impact of "S2" delivered key nutrients to the oceans, prompting microorganisms to thrive

Polar bears are spending more time on land as sea ice shrinks.

Polar Bears Are Exposed to More Parasites, Viruses and Bacteria as the Arctic Heats Up

Pathogens are more common in polar bears living in the Chukchi Sea now than they were three decades ago, a new study suggests—but it's not yet clear what that means for the mammals' health

Researchers found roughly 40 depressions on the lake bed of Lake Michigan within the Wisconsin Shipwreck Coast National Marine Sanctuary.

Mysterious Craters Discovered on the Bottom of Lake Michigan Could Hold Lessons About Early Life on Earth

Scientists aren't sure how the circular indentations some 450 feet below the surface formed, but they hope to investigate further

The chunks of cheese were found alongside ancient mummies in China in 2003.

The World's Oldest Cheese Was Buried in a Chinese Tomb 3,600 Years Ago. Now, Scientists Have Sequenced Its DNA

New research has revealed that the mysterious white substance found alongside three ancient mummies was once a soft cheese called kefir

View from the researchers' airplane flying over Japan

Scientists Have Found Bacteria and Fungi 10,000 Feet Up in the Air

The discovery has implications for human health, since the microbes included some that were still viable, some that could be infectious to humans and others that carried drug-resistant genes

Deaths attributable to antimicrobial resistance could reach 39 million between 2025 and 2050.

Deaths From Antibiotic-Resistant Infections Could Reach 39 Million by 2050, Study Suggests

A new paper analyzes three decades of fatalities around the world and predicts how "superbugs" will affect human health in the future

Biocrust in Utah

Inside the Effort to Save Earth's Biocrusts

Think twice before stepping on that crunchy top layer of soil. It may be a vital ecosystem that you can help protect

The drill site on Guliya Glacier, where researchers obtained an ice core representing 41,000 years of history.

Experts Discover 1,700 Ancient Viruses in a Tibetan Glacier

Studying how the viruses, which do not infect humans, adapted to previous major temperature shifts could hold clues to how modern viruses will react to the current climate change

Viruses known known as bacteriophages, or “bacteria eaters” in Greek, occupy the gut.

Inside the Hidden Kingdom of Viruses in Your Gut

Human innards are teeming with viruses that infect bacteria. Here's what scientists are learning about them

A colorized transmission electron micrograph of monkeypox virus particles. There have been 15,600 mpox cases and 537 deaths reported in the Democratic Republic of the Congo in 2024 so far.

WHO Declares Mpox Global Health Emergency. Here's What to Know

A new virus strain has been spreading primarily the Democratic Republic of the Congo, as well as nearby countries that had previously not reported mpox cases

A mantle rock sample viewed under a microscope.

Scientists Drill Deeper Into Earth's Mantle Than Ever Before, Probing for the Origin of Life on Earth

The record-setting rock samples will provide insight into the chemical processes that may have kick-started life on our planet

Microwaves need to be cleaned regularly, just like other kitchen surfaces.

Your Microwave Is Teeming With Bacteria, Study Suggests

Researchers found thriving communities of microbes in microwave ovens used in home kitchens, shared spaces and laboratories

Vultures clean up carcasses quickly, preventing bacteria and pathogens from proliferating. 

When Vultures Nearly Disappeared in India, Half a Million People Died, Too, Study Finds

By being nature's clean-up crew, the often maligned birds help prevent the spread of diseases, according to a new study

A lesser flamingo feeds at Lake Bogoria, in Kenya.

How Will Climate Change Hurt Lesser Flamingos?

Their food supply in East African lakes could collapse as rains increase

The mayor of Paris, Anne Hidalgo, took a brief swim in the Seine River wearing a wetsuit and goggles on July 17.

Paris Mayor Takes a Dip in the Seine Ahead of the Summer Olympics

The city spent $1.5 billion to improve water quality in the river, where several Olympic events are scheduled to take place

A petri dish with bacteria from a stool sample. The researchers found a number of bacteria, fungi and viruses in fecal samples from children that were altered in children with autism.

Gut Microbes Could Help Diagnose Autism, Study Suggests

While more research is needed, scientists detected specific differences between the gut microbiomes of children with and without autism

In 1881, Fanny Angelina Hesse suggested agar, a jelly-like substance she used in cooking, as a replacement for gelatin, which scientists used to study microorganisms.

Meet the Forgotten Woman Who Revolutionized Microbiology With a Simple Kitchen Staple

Fanny Angelina Hesse introduced agar to the life sciences in 1881. A trove of unpublished family papers sheds new light on her many accomplishments

Chickens on a poultry farm in Tepatitlan, Jalisco State, Mexico, on June 6, 2024. Outbreaks of H5N2 avian influenza have recently been reported in poultry in Mexico.

Man Infected With H5N2 Bird Flu in Mexico Dies. Here's the Latest on the Virus

The strain is not the same one that has infected U.S. cows and three dairy farm workers, and officials say the risk to the general public remains low

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