Rob Stein

Rob Stein is a correspondent and senior editor on NPR's science desk.

An award-winning science journalist with more than 25 years of experience, Stein mostly covers health and medicine. He tends to focus on stories that illustrate the intersection of science, health, politics, social trends, ethics, and federal science policy. He tracks genetics, stem cells, cancer research, women's health issues and other science, medical, and health policy news.

Before NPR, Stein worked at The Washington Post for 16 years, first as the newspaper's science editor and then as a national health reporter. Earlier in his career, Stein spent about four years as an editor at NPR's science desk. Before that, he was a science reporter for United Press International (UPI) in Boston and the science editor of the international wire service in Washington.

Stein is a graduate of the University of Massachusetts, Amherst. He completed a journalism fellowship at the Harvard School of Public Health, a program in science and religion at the University of Cambridge, and a summer science writer's workshop at the Marine Biological Laboratory in Woods Hole, Mass.

Stein's work has been honored by many organizations, including the National Academy of Sciences, the American Association for the Advancement of Science and the Association of Health Care Journalists.

Scientists have long hoped that stem cells might have the power to treat diseases. But it's always been clear that they could be dangerous too, especially if they're not used carefully.

Now a pair of papers published Wednesday in the New England Journal of Medicine is underscoring both the promise and the peril of using stem cells for therapy.

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Ali Brivanlou slides open a glass door at the Rockefeller University in New York to show off his latest experiments probing the mysteries of the human embryo.

"As you can see, all my lab is glass — just to make sure there is nothing that happens in some dark rooms that gives people some weird ideas," says Brivanlou, perhaps only half joking.

Brivanlou knows that some of his research makes some people uncomfortable. That's one reason he has agreed to give me a look at what's going on.

Federal health officials may be about to get greatly enhanced powers to quarantine people, as part of an ongoing effort to stop outbreaks of dangerous contagious diseases.

The new powers are outlined in a set of regulations the Centers for Disease Control and Prevention published late last month to update the agency's quarantine authority for the first time since the 1940s.

Scientists are reporting the results of controversial experiments that they say are encouraging them to continue to try to develop embryos that are part-human and part-animal.

The Obama administration has dropped a controversial proposal that would have required all federally funded scientists to get permission from patients before using their cells, blood, tissue or DNA for research.

For years, women have been told that regular mammograms can help reduce their risk of dying from breast cancer by catching tumors at their earliest, most treatable stages.

But a Danish study is the latest research to challenge that assumption. Researchers followed thousands of women in Denmark over more than a decade and found that perhaps one-third of the abnormalities detected by mammograms may never cause health problems.

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Zika - a little more than a year ago, most people had never heard of it. Then doctors in Brazil started to see lots of babies being born with malformed heads. They had microcephaly, a rare birth defect.

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Doctors have long known that black people are more likely than white people to suffer from diseases such as high blood pressure. A study suggests that racial discrimination may be playing a role in a surprising way.

The study, which involved 150 African-Americans living in Tallahassee, Fla., found that knowing someone who had experienced racial discrimination was associated with genetic markers that may affect risk for high blood pressure.

One of the fundamental ways scientists measure the well-being of a nation is tracking the rate at which its citizens die and how long they can be expected to live.

So the news out of the federal government Thursday is disturbing: The overall U.S. death rate has increased for the first time in a decade, according to an analysis of the latest data. And that led to a drop in overall life expectancy for the first time since 1993, particularly among people younger than 65.

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