Nell Greenfieldboyce

Nell Greenfieldboyce appears in the following:

Encore: Ancient footprints mistakenly attributed to bears were made by early humans

Tuesday, January 18, 2022

A new look at nearly 3.7 million-year-old fossil footprints uncovered in Tanzania shows that multiple species of early humans lived together at the same time.


Scientists think they've found a big, weird moon in a far-off star system

Thursday, January 13, 2022

Scientists have found many planets orbiting distant stars, but so far no proof that any have moons. Now, researchers have detected signs of a large exomoon orbiting a Jupiter-like world.


Who gets to use NASA's James Webb Space Telescope? Astronomers work to fight bias

Tuesday, January 11, 2022

With the James Webb Space Telescope safely deployed, many scientists want to use it. To minimize the effect of unconscious biases, they go through a process developed for the Hubble Space Telescope.


NASA just launched the most powerful space telescope ever. Watch it here

Saturday, December 25, 2021

The James Webb Space Telescope blasted off from French Guinea at 7:20 a.m. ET on Saturday, Dec. 25. The NASA mission was decades in the making and should reveal the earliest galaxies in the universe.


The calorie intake of a Baleen whale is mind-boggling

Friday, December 24, 2021

A study shows how much prey whales eat. It reveals how the global loss of whales changed ocean life in ways that may make it harder for them to rebound. (Story first aired on ATC on Nov. 11, 2021.)


Why some astronomers once feared NASA's James Webb Space Telescope would never launch

Wednesday, December 22, 2021

NASA's James Webb Space Telescope is waiting at its launch site, after years of repeated delays and cost overruns. At one point, the giant new observatory was threatened with cancellation.


Christmas Eve telescope launch has astronomers hoping for good tidings of great joy

Monday, December 20, 2021

As they count down the hours to the highly anticipated launch of NASA's powerful, $10 billion James Webb Space Telescope, astronomers hope for the best while fearing the worst.


This new space telescope should show us what the universe looked like as a baby

Friday, December 17, 2021

The upcoming launch of NASA's powerful James Webb Space Telescope should let astronomers see what some of the universe's first stars and galaxies looked like soon after the Big Bang.


NASA is about to launch the most powerful space telescope ever

Thursday, December 16, 2021

The James Webb Space Telescope will let astronomers peer farther into space than ever before, to see what galaxies looked like when the universe was newly born.


Astronomers find a new planet that's mostly made of iron

Thursday, December 02, 2021

NASA's TESS telescope finds a small, iron-rich planet which could help explain the origins of Mercury, the innermost planet in our solar system


Ancient footprints mistakenly attributed to bears were made by early humans

Wednesday, December 01, 2021

A new look at nearly 3.7 million-year-old fossil footprints uncovered in Tanzania shows that multiple species of early humans lived together at the same time.


In a first test of its planetary defense efforts, NASA's going to shove an asteroid

Monday, November 22, 2021

NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.


Astronomers want NASA to build a giant space telescope to peer at alien Earths

Thursday, November 04, 2021

NASA should work toward a new space telescope that could view small planets around distant stars with the potential to host life, expert panel says


The biggest whales can eat the equivalent of 80,000 Big Macs in one day

Wednesday, November 03, 2021

Scientists have gotten the best estimates yet of exactly how much baleen whales, the largest animals on the planet, can consume in one day. Their caloric intake is mind-boggling.


If NASA greenlights this interstellar mission, it could last 100 years

Tuesday, October 26, 2021

Scientists who want to understand what's beyond our solar system have designed an interstellar spacecraft that could go out farther and faster than the famous Voyager probes.


William Shatner is bound for space, but the rest of us will have to wait

Monday, October 11, 2021

New space companies are touting space tourism. But so far the final frontier has been the playground of the rich or famous, plus a few everyday folks who had a bit of luck.


Two scientists win Nobel Prize in chemistry for new way of building molecules

Wednesday, October 06, 2021

Benjamin List and David MacMillan were awarded the 2021 Nobel Prize in chemistry for coming up with a new tool for constructing molecules that has advanced pharmaceuticals and green technology.


As he steps down as the head of NIH, he has a warning about future pandemics

Tuesday, October 05, 2021

Francis Collins has served longer than any other director of the National Institutes of Health since 1971. He tells NPR he did not anticipate the culture wars taking over scientific fact.


Shadowed by controversy, NASA won't rename its new space telescope

Thursday, September 30, 2021

Some scientists say discrimination against gay and lesbian government employees during James Webb's tenure as NASA administrator should preclude him from having a telescope named in his honor.


NASA's Got A New, Big Telescope. It Could Find Hints Of Life On Far-Flung Planets

Thursday, September 23, 2021

The James Webb Space Telescope will let scientists study small, rocky planets around distant stars in more detail than ever before. After decades of work, it could head into orbit later this year.