Stories by Tanya Lewis

Up to 50 transplant patients will receive a genetically modified pig kidney in a clinical trial that will launch this summer

Scientists have reported a new strain of bird flu in Nevada dairy cattle. And viral spread in pet cats has fueled worries over increased risk of exposure to humans

Outrage fatigue can wear us down—but we can take care of ourselves in an onslaught of overwhelming news.

COVID levels may have peaked but flu is still high; RSV is on the way out

From Robert F. Kennedy, Jr.’s views on vaccines to Medicaid, here are some ways his confirmation as head of the Department of Health and Human Services could have sweeping effects on health care

A rundown on what’s at stake for global health if the U.S. withdraws from the World Health Organization and an update on bird flu are in this week’s science news roundup.

The Food and Drug Administration has banned the use of the dye Red No. 3 in all food and ingested drugs. Here’s what foods and drugs contain the coloring, and how it compares with Red No. 40 and other artificial dyes

Eggs can carry nasty viruses and bacteria. Here’s how to store and eat them safely

Louisiana has reported the first U.S. fatality from avian influenza. Most of the country’s human cases have been mild

Repeated exposure to outrage-inducing news or events can lead to emotional exhaustion. An expert who studies online outrage says there are ways to cope

Samples from a hospitalized patient in Louisiana show changes that could make the H5N1 virus spread more easily between humans

We’re closing out the year with a roundup of the science stories that stood out to our editors in 2024.

Louisiana reported a person hospitalized with a severe case of H5N1, and the USDA has begun bulk milk testing

From periods of rapid aging in our 40s and 60s to ancient brains that don’t decompose, here are some of the year’s most intriguing stories about human biology

Scientific American sat down with physician-scientist Anthony Fauci, who recently published a memoir, to discuss COVID mistakes and successes, bird flu concerns and political divisions

The suspect in the recent shooting of a UnitedHealthcare CEO reportedly had spondylolisthesis, a condition that causes the vertebrae to go out of alignment

“America’s Doctor” says that our common enemy is the danger posed by viruses, not each other.

RFK, Jr., could restructure the CDC, FDA and NIH in pursuit of his flawed vision of public health. Plus, we discuss chimpanzees at play and the first-ever close-up image of a star.

The outcome of the 2024 U.S. presidential election could reshape policies from health care at home to nuclear proliferation abroad

Humans and pigs could both serve as mixing vessels for a bird flu–seasonal flu hybrid, posing a risk of wider spread

The 2024 Nobel Prize in Physiology or Medicine was given to Victor Ambros and Gary Ruvkun for the discovery of an important gene-manipulating mechanism in cells

The presidential candidates have vastly divergent records on and plans for protecting access to reproductive health care, including abortion and IVF

Experts call for greater testing of contacts of a person who was infected with the H5N1 bird flu strain before the virus causes a wider outbreak

Uterus transplants are becoming more common, opening up the possibility of pregnancy and parenthood to people with certain health conditions