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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.

A Mongolian horse that has long been hailed as the last truly wild horse species in existence isn't really all that wild.

It turns out that Przewalski's horses are actually feral descendants of the first horses that humans are known to have domesticated, around 5,500 years ago.

What's more, the modern horses that people ride today cannot be traced to those early steeds. That means humans must have tamed wild horses once again later on, somewhere else, but no one knows where or when.

In the brave new world of synthetic biology, scientists can now brew up viruses from scratch using the tools of DNA technology.

The latest such feat, published last month, involves horsepox, a cousin of the feared virus that causes smallpox in people. Critics charge that making horsepox in the lab has endangered the public by basically revealing the recipe for how any lab could manufacture smallpox to use as a bioweapon.

A rocket more powerful than any other flying today is scheduled to blast off Tuesday for the first time, if all goes well.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

LULU GARCIA-NAVARRO, HOST:

A star-forming region called the Tarantula Nebula contains more really massive stars than scientists had predicted.

The discovery, reported in the journal Science, could shake up astrophysicists' ideas about how massive stars have shaped the universe.

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