Nell Greenfieldboyce

Nell Greenfieldboyce is a NPR science correspondent.

With reporting focused on general science, NASA, and the intersection between technology and society, Greenfieldboyce has been on the science desk's technology beat since she joined NPR in 2005.

In that time Greenfieldboyce has reported on topics including the narwhals in Greenland, the ending of the space shuttle program, and the reasons why independent truckers don't want electronic tracking in their cabs.

Much of Greenfieldboyce's reporting reflects an interest in discovering how applied science and technology connects with people and culture. She has worked on stories spanning issues such as pet cloning, gene therapy, ballistics, and federal regulation of new technology.

Prior to NPR, Greenfieldboyce spent a decade working in print, mostly magazines including U.S. News & World Report and New Scientist.

A graduate of Johns Hopkins, earning her Bachelor's of Arts degree in social sciences and a Master's of Arts degree in science writing, Greenfieldboyce taught science writing for four years at the university. She was honored for her talents with the Evert Clark/Seth Payne Award for Young Science Journalists.

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A cheap new lab test can use just a drop of blood to reveal the different kinds of viruses you've been exposed to over your lifetime.

The test suggests that, on average, people have been infected with about ten different types of known virus families, including influenzas, and rhinoviruses that cause the common cold, according to a report published Thursday in Science.

Since the 1960s, biologists have made fake eggs for some studies of bird behavior. But Mark Hauber of Hunter College in New York says this kind of scientific handicraft is not exactly his forte.

"I'm a terrible craftsperson," he admits.

That's why Hauber is pioneering the use of 3-D printing technology to quickly produce made-to-order fake eggs, taking a bit of old-school science into the 21st century.

With recent news headlines proclaiming that dozens of people have been selected as finalists for a Martian astronaut corps, it might seem like a trip to this alien world might finally be close at hand.

But let's have a little reality check. What are the chances that we really will see people on the Red Planet in the next couple of decades?

On a mountaintop in Chile, excavators have just started work on a construction site. It will soon be home to a powerful new telescope that will have a good shot at finding the mysterious Planet X, if it exists.

"Planet X is kind of a catchall name given to any speculation about an unseen companion orbiting the sun," says Kevin Luhman, an astronomer at Penn State University.

Copyright 2015 NPR. To see more, visit


Copyright 2014 NPR. To see more, visit

How many times do top officials have to say that the Ebola virus is not airborne?

A lot, apparently.

Here is President Obama Thursday: "This is not an airborne disease. It is not easy to catch."

And the day before: "It is not like the flu. It is not airborne."

And Friday, a reporter asked the inevitable question about airborne Ebola when Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, held a press briefing about nurse Nina Pham's transfer to the National Institute of Health.

While the Ebola outbreak continues to rage in West Africa, it is also unfolding — in a virtual sense — inside the computers of researchers who study the dynamics of epidemics.

Policymakers look to these simulations to get a sense of how the outbreak might spread. They also can use them to run experiments to see which public health measures should take priority.

Behind the scenes at the Smithsonian's National Museum of Natural History, there's a vast, warehouse-like room that's filled with metal cabinets painted a drab institutional green. Inside the cabinets are more than a half-million birds — and these birds are not drab. Their colorful feathers make them seem to almost glow.