Will Sullivan

Will Sullivan

 

Will Sullivan is a science writer based in Washington, D.C. His work has appeared in Inside Science and NOVA Next.

Rangers clear deceased birds from Staple Island in England, where avian flu had a devastating effect on a seabird colony.

Four Important Questions About Bird Flu, Answered

The virus has killed tens of millions of birds and infected hundreds of species of animals, including dairy cattle in the United States. Here’s what you should know about it

The environment surrounding the galaxy system where the two black holes are merging. The event is occurring in the distant universe, around 13 billion years ago.

James Webb Telescope Detects Earliest Known Black Hole Merger, Just 740 Million Years After the Big Bang

The new observations could help explain how black holes became so massive in the early universe

An artist's rendering of a feathered dinosuar in the snow. Feathers would have allowed dinosaurs, ancestors of birds, to trap their body heat in cold climates.

Some Dinosaurs Evolved to Be Warm-Blooded 180 Million Years Ago, Study Suggests

Researchers studied the geographic distribution of dinosaurs to draw conclusions about whether they could regulate their internal temperatures

Tourists cool off in front of a fan in Rome, Italy on July 18, 2023. Temperatures in the area at the time surpassed 104 degrees Fahrenheit.

Last Year, the Northern Hemisphere Had Its Hottest Summer in 2,000 Years

Researchers used tree ring data to compare temperatures from as far back as 1 C.E. to 2023 temperatures

Runners compete in the Marathon des Sables, a 250-kilometer race in the Sahara Desert in Morocco, in 2022. Humans have a number physiological adaptations, such as slow-twitch muscle fibers and the ability to sweat a lot, that help with endurance running.

Long-Distance Running May Have Evolved to Help Humans Chase Prey to Exhaustion

Scientists found hundreds of recent examples from around the globe of hunters using "endurance pursuits" to tire out their prey, furthering the debate over the hunting technique

From Latourell, Oregon, the northern lights appear as ribbons of color in the night sky on May 11.

See 12 Breathtaking Images of the Northern Lights, Spotted in Shocking Places Over the Weekend

A period of unusually strong solar activity meant the colorful aurora borealis could be seen much farther south than normal

A map of excitatory neurons from the new research. The team cataloged around 57,000 cells and 150 million connections between neurons.

Scientists Imaged and Mapped a Tiny Piece of Human Brain. Here's What They Found

With the help of an artificial intelligence algorithm, the researchers produced 1.4 million gigabytes of data from a cubic millimeter of brain tissue

An artist's concept of 55 Cancri e and its sun. The star is much closer to its sun than any planet in our solar system, so it is too hot to support life.

Astronomers Discover an Atmosphere on a Hot, Rocky Exoplanet With an Ocean of Magma

It's the best evidence yet of an atmosphere on a rocky planet outside our solar system, researchers say, and studying the distant world could provide insight into Earth’s early days

An MRI of a brain of a person with Alzheimer's disease. A new study suggests having two copies of a genetic variant called APOE4 is a cause of the disease, not just a risk factor for it.

Almost All People With Two Copies of This Genetic Variant Develop Signs of Alzheimer's Disease, Study Finds

The research focused on a variant called APOE4 and largely looked at people of European ancestry—risk levels are different for other groups, the authors say

Previous research had found leprosy in modern red squirrels, and genetic analysis suggested the strain was closely related to leprosy found in medieval humans.

Medieval Squirrels and Humans May Have Spread Leprosy Back and Forth

Archaeologists uncovered evidence of leprosy in a medieval red squirrel in England, and DNA evidence revealed the strain was similar to what was circulating in humans at the time

The U.S. Navy works to recover the Orion spacecraft following its 2022 test flight to the moon.

NASA's Orion Capsule Heat Shield Wore Away in More Than 100 Places During 2022 Test Flight, Posing 'Significant Risks'

A new report highlights safety issues that NASA must address before using the spacecraft to send astronauts to the moon, and the agency is already working on fixing the problems

To create mouse-rat "chimeras," researchers injected rat stem cells into mouse embryos that lacked some genes for brain development.

Researchers Breed Mice With Hybrid Brains Containing Cells From Rats

In one experiment, rat neurons helped mice restore their senses of smell—the first time any animal has perceived the world through the sensory hardware of another species

Previous research suggested that anger can increase people's risk of heart attacks. In the new study, researchers found that part of the reason why could be that anger briefly reduces blood vessels' ability to widen.

Can Anger Affect Your Heart Health? Scientists Find the Strong Emotion Impacts How Blood Vessels Function

The results could even help explain why stress from anger may trigger a heart attack

While penguins have feathers that shield their skin from radiation, their eyes remain unprotected. Increased ultraviolet radiation exposure could also have harmful effects for Antarctic organisms like seals, krill and plankton, per a new paper.

Antarctica's Ozone Hole Is Persisting Later Into the Year, Raising Concerns for Wildlife

As a result of the longer-lasting hole, harmful ultraviolet radiation is reaching Earth during a time when young penguins and seals are more vulnerable, scientists say

One of the loose zebras runs through a pasture before being recaptured. The zebra that is still on the loose was spotted on Monday.

Four Zebras Escape From Trailer on Washington State Highway—One Is Still on the Loose

The animals ran around residential areas before community members—including a former rodeo bullfighter—helped corral three of them

Experts say the pasteurization process likely kills the virus, and tests are likely just detecting remnants of the dead virus.

One in Five Milk Samples Has Bird Flu Virus Fragments, Suggesting Cow Infections Are More Widespread Than Thought

The research has not yet found evidence that milk contains infectious virus, and the FDA says the commercial milk supply is safe

Doctors perform a pig kidney transplant on April 12. So far, the patient is recovering well, but doctors will need to continue to monitor her in the hospital and make sure her immune system doesn't reject the transplanted organ.

Second Patient Receives Gene-Edited Pig Kidney Transplant in Breakthrough Surgery

The woman, 54-year-old Lisa Pisano, also received a mechanical heart pump implant days earlier, making her the first person to undergo both procedures

Bird flu was first detected in U.S. dairy cows in March. So far, infections have been detected in 33 herds across eight states.

Bird Flu Virus Detected in Pasteurized Milk, as U.S. Moves to Test More Dairy Cows

The FDA maintains that the commercial milk supply is safe, and it plans to report results of further tests in the coming days and weeks

Members of the Voyager 1 flight team celebrate after receiving health and status data from the spacecraft. Next, engineers need to enable the probe to start sending science data again.

Voyager 1 Sends Clear Data to NASA for the First Time in Five Months

The farthest spacecraft from Earth had been transmitting nonsense since November, but after an engineering tweak, it finally beamed back a report on its health and status

Antonia, one of the new black-footed ferret clones. The first black-footed ferret clone was born in 2020. The two new ferrets are the second and third successful clones.

Scientists Clone Two Black-Footed Ferrets From Frozen Tissues in Conservation Effort

The aim of cloning the animals is to increase the genetic diversity of the endangered species

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