April 25, 2018

A U.S. serviceman severely injured several years ago in an IED blast in Afghanistan has received the world's first total penis and scrotum transplant, surgeons at the Johns Hopkins University School of Medicine announced Monday.

The man, whose identity was not released,...

April 18, 2018

Mice that live in the basements of New York City apartment buildings — even at the most exclusive addresses — carry disease-causing bacteria, antibiotic-resistant bugs and viruses that have never been seen before, a new study from Columbia University finds.


April 12, 2018

Doctors have long wondered why breast cancer patients are more likely to see their cancer spread within the first 18 months after a lumpectomy or mastectomy. 

A new study suggests the wound healing that follows surgery may trigger this spread.

As the immune system w...

April 11, 2018

He’s a professor at Harvard Medical School, but in many ways, Dr. Victor Gurewich is an outsider.

His research is funded by a small family foundation, and he hasn’t tried for a federal grant in decades. He’s a primary care doctor whose work tramples on the terrain of ca...

The mice scurrying around their cage in Katsuhiko Hayashi's laboratory do not look remarkable. They run, eat and sleep like others of their kind. But these eight rodents have an unusual origin story, one that Hayashi, a reproductive biologist at Kyushu University in Ja...

February 27, 2018

CAMBRIDGE, Mass. — Harvard students have long had access to Tinder and match.com and Facebook, which was, after all, invented in one of their dorm rooms.

But they still sign up by the thousands for Datamatch, a Valentine’s-Day-only matchmaking service designed to bring...

January 11, 2018

Male sea turtles are disappearing from Australia’s Great Barrier Reef.

A new study of gender ratios found that 99 percent of immature green turtles born in the northern part of the reef are female. Among adult turtles, 87 percent are female, suggesting that there has be...

November 8, 2017

The German doctors realized they had to do something drastic or their seven-year-old patient would die. The boy had escaped war-ravaged Syria with his parents, and a rare genetic disease had left him with raw, blistering sores over 80 percent of his body. His doctors i...

October 27, 2017

A medical condition might explain former President George H.W. Bush’s recent behavior, according to several doctors who are familiar with the condition but not with the President’s case or care.

Bush, 93, who has used a wheelchair for the last five years, was accused re...

October 10, 2017

People regularly approach Jane Goodall in airports, tears in their eyes, and tell her she’s their idol. She travels 300 days a year, and at 83, she speaks dreamily about her home in England, the house she grew up in, where her sister still lives with her own family. Go...

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About me



journalist covering

the biological


Regular contributor to The

New York Times, The Washington Post, 

Scientific American.com, WBUR radio and others. 

Journalism educator and book




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