Nell Greenfieldboyce

Nell Greenfieldboyce appears in the following:

Say Au Revoir To That Hunk Of Metal In France That Has Defined The Kilogram

Tuesday, November 13, 2018

A small cylinder called Le Grand K has defined the kilogram for more than a hundred years. But if a scratch ever rendered it lighter, the definition of the kilo literally shifted. Time for a change.

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Birds Got Their Colorful, Speckled Eggs From Dinosaurs

Wednesday, October 31, 2018

A new study found that birds' dinosaur relatives had eggs with traces of two pigments—a red-brown one and a blue-green one. In today's birds that might produce a color such as robin's egg blue.

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Geologists Question 'Evidence Of Ancient Life' In 3.7 Billion-Year-Old Rocks

Wednesday, October 17, 2018

A new analysis of what were initially thought to be microbial fossils in Greenland suggests they might instead just be mineral structures created when ancient tectonic forces squeezed stone.

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Rocket Headed For International Space Station Fails, Makes Emergency Landing

Thursday, October 11, 2018

Astronaut Nick Hague and Russian cosmonaut Alexey Ovchinin were on board when their Soyuz MS-10's booster malfunctioned. The two made it out safely.

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Scientists Find What Could Be A History-Making Moon

Wednesday, October 03, 2018

Scientists have detected plenty of planets outside our solar system. Now, they say, they've found the first moon circling one of them.

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Nobel Prize In Chemistry Honors Work That Demonstrates 'The Power Of Evolution'

Wednesday, October 03, 2018

An American woman, Frances H. Arnold, has won half of the 2018 Nobel Prize in chemistry, and George Smith of the U.S. and Sir Gregory Winter of the U.K. will share the other half.

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Winners Of Nobel Prize In Chemistry Announced In Stockholm

Wednesday, October 03, 2018

Frances H. Arnold, an American chemist, has won half of the 2018 Nobel Prize in Chemistry, and George Smith of the U.S. and Sir Gregory Winter of the U.K will share the other half.

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Octopuses Get Strangely Cuddly On The Mood Drug Ecstasy

Thursday, September 20, 2018

The drug makes the usually antisocial creatures much more interested in friendly contact with other octopuses. It's one more sign that the chemistry of social behavior has deep evolutionary roots.

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BirdCast: Predicting Bird Migrations

Sunday, September 16, 2018

Scientists have developed a forecast model for predicting mass bird migrations, based in part on weather patterns.

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Migrating Birds Avoid Bad Weather — Which Makes Their Paths Predictable

Thursday, September 13, 2018

Scientists have developed a forecast model for predicting mass bird migrations, based in part on weather patterns.

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What's Mine Is Yours, Sort Of: Bonobos And The Tricky Evolutionary Roots Of Sharing

Tuesday, September 11, 2018

Bonobos are much more likely than common chimpanzees to share their food, a study suggests. But researchers who study sharing say human kids are more helpful and cooperative than either species.

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Migration 101: It Doesn't Come Naturally For Moose And Sheep

Thursday, September 06, 2018

A study suggests large mammals must learn to migrate — and they aren't exactly quick studies. It takes decades before populations can effectively move across land to find the best food.

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Who Caused The Mysterious Leak At The International Space Station?

Wednesday, September 05, 2018

"We don't reject any theories," said Dmitry Rogozin, the head of Russia's space agency. That includes sabotage, though he suspects it was more likely a "technological error."

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Too Frail To Retire? Humans Ponder The Fate Of Research Chimps

Tuesday, August 28, 2018

Lab chimps used in medical studies are being retired to a forested sanctuary. But scientists and workers who care for the animals say some older chimps aren't healthy enough to make the transition.

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Toddlers Like Winners, But How They Win Matters

Monday, August 27, 2018

Unlike other primates, human toddlers watching a competition don't appreciate victors who shove rivals out of the way. Even little kids prefer high-status characters who aren't bullies.

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NASA Braves The Heat To Get Up Close And Personal With Our Sun

Thursday, August 09, 2018

A new NASA probe will get closer to our sun than ever before, to try to solve mysteries like why its atmosphere is so much hotter than its surface.

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NASA Announces New Astronauts For Commercial Flights

Sunday, August 05, 2018

NASA has selected the astronauts who will fly on the first commercial space flights.

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NASA Announces Crew For First Commercial Space Flights

Friday, August 03, 2018

NASA has selected the astronauts who will blast off on new commercial space vehicles set for next year. Two of them flew on the final mission of NASA's space shuttle in 2011.

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What Makes A Leader?

Thursday, August 02, 2018

Leaders make decisions for a group in the same way they make choices for themselves, a study suggests. They don't change their decision-making behavior, even when the welfare of others is at stake.

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When Spiders Go Airborne, It's Electric — Literally

Thursday, July 05, 2018

Many spiders ply the skies by riding "balloons" of silk. And they rely on something more than just the wind to take them high up and far away.

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