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.

Rats will enthusiastically work to free a rat caught in a trap — and it turns out that they are especially eager to be a good Samaritan when they're in the company of other willing helpers.

But that urge to come to the rescue quickly disappears if a potential hero is surrounded by indifferent rat pals that make no move to assist the unfortunate, trapped rodent.

Flying snakes like Chrysopelea paradisi, the paradise tree snake, normally live in the trees of South and Southeast Asia. There, they cruise along tree branches and, sometimes, to get to the ground or another tree, they'll launch themselves into the air and glide down at an angle.

They undulate their serpentine bodies as they glide through the air, and it turns out that these special movements are what let these limbless creatures make such remarkable flights.

Dolphins learn special foraging techniques from their mothers—and it's now clear that they can learn from their buddies as well. Take the clever trick that some dolphins use to catch fish by trapping them in seashells. It turns out that they learn this skill by watching their pals do the job.

The discovery, reported in the journal Current Biology, helps reveal how groups of wild animals can transmit learned behaviors and develop their own distinct cultures.

In 2018, paleontologist Julia Clarke was visiting a colleague named David Rubilar-Rogers at Chile's National Museum of Natural History. He showed her a mysterious fossil that he'd collected years earlier in Antarctica. He and his co-workers called it "The Thing."

"It was weird enough that they decided to collect it, even though it wasn't clear what it was. It definitely wasn't bone, but it was strikingly unusual," recalls Clarke, who works at the University of Texas at Austin.

Sea otter populations are rebounding in the eastern North Pacific. There, they devour huge quantities of shellfish and other marine critters that people like to eat, too. But any commercial losses to fisheries are far outweighed by economic benefits associated with the otters, according to a new study.

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Shortly after NASA astronauts blasted off from U.S. soil for the first time since 2011, President Trump painted a dire picture of what the space agency had looked like when he first came to office.

"There was grass growing through the cracks of your concrete runways — not a pretty sight, not a pretty sight at all," he said at NASA's enormous Vehicle Assembly Building at Kennedy Space Center in Florida, where he had come to watch two astronauts launch to orbit in a vehicle owned and operated by SpaceX.

Almost 40 years have passed since the last time NASA astronauts blasted off into space on a brand new spaceship.

Now, as NASA looks forward to Wednesday's planned test flight of the SpaceX Crew Dragon with a pair of astronauts on board, some in the spaceflight community have a little bit of déjà vu.

In 2006, while hiking around the Root Glacier in Alaska to set up scientific instruments, researcher Tim Bartholomaus encountered something unexpected.

"What the heck is this!" Bartholomaus recalls thinking. He's a glaciologist at the University of Idaho.

NASA's head of human spaceflight has abruptly resigned just one week before a historic test flight to send astronauts up in a new space capsule developed by the rocket company SpaceX.

The unexpected departure of Doug Loverro startled the space community, which has been looking forward to launching astronauts from U.S. soil for the first time since the space shuttles stopped flying in 2011.

The White House has touted the fact that its coronavirus task force provided each state with a list of labs that could potentially test for the virus, but officials in a number of states told NPR that the lists did not actually help them increase testing.

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Because of the coronavirus, NASA's top official is asking space fans not to travel to Florida later this month to watch astronauts blast off from American soil for the first time since the retirement of the space shuttles in 2011.

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Today marks the end of the federal government's social distancing guidelines. President Trump says it'll now be up to states to take the lead.

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Heavy rains might have triggered the historic eruption of Kilauea in Hawaii in 2018. That's the bold assertion of a new analysis that has left some volcanologists intrigued and others doubtful.

Kilauea had been erupting since 1983 when, in the spring of 2018, it suddenly became extraordinarily more active. What followed was the most dramatic and destructive period of volcanic events in the U.S. since the 1980 eruption of Mount St. Helens.

As the coronavirus sweeps across the globe, one pattern remains consistent: Men seem harder hit by the virus than women and are more likely to have severe illness or die.

At least in the United States, however, it seems that men are less likely to seek out testing for the virus when they feel sick.

Tiny bits of twisted plant fibers found on an ancient stone tool suggest that Neanderthals were able to make and use sophisticated cords like string and rope.

Cords made from twisted fibers are so ubiquitous today that it's easy to take them for granted. But they're a key survival technology that can be used to make everything from clothes to bags to shelters.

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The Trump administration has issued new guidelines in a small first step towards reopening the country. These guidelines should make it easier for essential workers to stay on the job. NPR science correspondent Nell Greenfieldboyce is here. Hi, Nell.

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When researcher Josh Santarpia stands at the foot of a bed, taking measurements with a device that can detect tiny, invisible particles of mucus or saliva that come out of someone's mouth and move through the air, he can tell whether the bedridden person is speaking or not just by looking at the read-out on his instrument.

The World Health Organization says the virus that causes COVID-19 doesn't seem to linger in the air or be capable of spreading through the air over distances of more than about 3 feet.

But at least one expert in virus transmission said it's way too soon to know that.

The latest figures on coronavirus tests run so far in the U.S. were put at about 552,000, according to government officials during the Thursday's briefing of the White House Coronavirus Task Force.

"The testing is going very, very well," President Trump said.

At a time when the nation is desperate for authoritative information about the coronavirus pandemic, the country's foremost agency for fighting infectious disease outbreaks has gone conspicuously silent.

"I want to assure Americans that we have a team of public health experts," President Trump said at Tuesday evening's coronavirus task force briefing — a bit of reassurance that probably would not have been necessary if that briefing had included anyone from the Centers for Disease Control and Prevention.

It's unclear whether people who recover from COVID-19 will be immune to reinfection from the coronavirus and, if so, how long that immunity will last.

The United States is facing a grim dilemma: either effectively shut down society for months to prevent transmission of the coronavirus or see health care systems overwhelmed by people needing treatment for severe infections.

That's the conclusion of a influential new analysis by a well-respected group at Imperial College London that does computer simulations of outbreaks.

The U.S. government maintains an enormous stockpile of emergency medical supplies, and officials have already started dipping into it to help fight the novel coronavirus.

But while having a stockpile is better than not having it, experts say, there's a limit to what a stockpile can do in this crisis.

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