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 taken another important step toward creating different types of synthetic life in the laboratory.

An international research consortium reports Thursday that it has figured out an efficient method for synthesizing a substantial part of the genetic code of yeast.

"We are absolutely thrilled," says Jef Boeke, a geneticist at New York University School of Medicine, who is leading the project. "This is a significant step toward our goal."

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.

Scientists could be allowed to make modifications in human DNA that can be passed down through subsequent generations, the National Academy of Sciences and the National Academy of Medicine say.

Such a groundbreaking step should only be considered after more research and then only be conducted under tight restrictions, the academies write in a highly anticipated report released Tuesday. Such work should be reserved to prevent serious diseases and disabilities, it says.

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.

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.

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.

It's a cold, damp fall day in London. But in a windowless basement laboratory, it feels like the tropics. It's hot and humid. That's to keep the mosquitoes happy.

"In this cage, we have the adult mosquitoes," says Andrew Hammond, a genetic engineer at Imperial College London, as he picks up a container made out of white mosquito netting.

The lab is buzzing with hundreds of mosquitoes. "Everything in this cubicle is genetically modified," Hammond says, pointing to the container of mosquitoes.

One big question about the Zika virus has been how big a risk the virus might pose in the United States.

Studies earlier this year suggested that birth defects and other problems were mainly limited to babies born in some parts of Brazil.

A study out Tuesday provides a sense of the effects on women who were exposed while pregnant in other countries and then came to the United States. About 6 percent of those pregnancies resulted in defects in the fetus or baby.

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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