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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.

The luminous glow of light pollution prevents nearly 80 percent of people in North America from seeing the Milky Way in the night sky.

That's according to a new atlas of artificial night sky brightness that found our home galaxy is now hidden from more than one-third of humanity.

An elderly woman died and more than two dozen people were treated for possible rabies exposure after her family failed to realize that a nighttime encounter with a bat put her at risk of rabies.

Last August, the woman awoke in her Wyoming home and felt a bat on her neck. She swatted it away and washed her hands. Her husband captured the bat with gloved hands and released it outside.

Male orb-weaving spiders get devoured by the females they mate with, but a newly published study shows that at least the poor guys get to choose the lovely lady who will cannibalize them.

Flowers generate weak electric fields, and a new study shows that bumblebees can actually sense those electric fields using the tiny hairs on their fuzzy little bodies.

"The bumblebees can feel that hair bend and use that feeling to tell the difference between flowers," says Gregory Sutton, a Royal Society University Research Fellow at the University of Bristol in the United Kingdom.

You can't help but notice that Scott Pitnick has a big tattoo. It's a sperm with a long tail that winds down his right arm.

People sometimes stare. "And when I tell them what it is, they either are very interested or they pivot on their heel and walk away," says Pitnick, an evolutionary biologist at Syracuse University. "All eye contact ceases."

Some people just don't like talking about sperm. But not him. He's spent his career trying to unravel the mystery of giant sperm.

Over 150 pregnant women in the United States appear to have been infected with Zika virus. That's in addition to more than 120 women affected by Zika in U.S. territories, mainly Puerto Rico.

Those are the latest figures from the Centers for Disease Control and Prevention in Atlanta, which has been keeping track of all pregnant women in the U.S. and its territories who have lab tests suggestive of Zika virus infections.

Inside a lab near Washington, D.C., there is a stack of stainless steel that weighs a million pounds.

It's part of a unique machine that was built in 1965 and just refurbished for the first time. And in the world of metrology, the science of measurement, this giant is a source of national pride.

Scientists have found a microbe that does something textbooks say is impossible: It's a complex cell that survives without mitochondria.

Mitochondria are the powerhouses inside eukaryotic cells, the type of complicated cell that makes up people, other critters and plants and fungi. All eukaryotic cells contain a nucleus and little organelles — and one of the most famous was the mitochondrion.

NASA announced Tuesday the discovery of an unprecedented number of planets beyond our solar system — astronomers have confirmed the existence of 1,284 new worlds orbiting distant stars.

These planets beyond our solar system — exoplanets — were discovered with the help of NASA's Kepler Space Telescope, which launched in 2009.

A trio of newly discovered Earth-sized planets looks ideally suited to search for signs that these alien worlds might be able to support life.

The planets orbit close to an unusually small, reddish star that's about one-eighth the size of our sun and is far cooler, researchers report in the journal Nature.

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