Nell Greenfieldboyce appears in the following:
Wednesday, May 04, 2022
NASA and the European Space Agency are gearing up to bring home a pristine sample of Martian rock. But given the small chance of life on the red planet, they have to grapple with safety questions.
Wednesday, April 20, 2022
Millions of chickens and turkeys have been killed to control an avian flu outbreak, but the virus is also infecting wild birds. (Story first aired on Weekend Saturday on April 9, 2022.)
Tuesday, April 19, 2022
NASA should send probes to the ice giant planet of Uranus and to a moon of Saturn where conditions could be right for life. Those are some of the recommendations in a new report to the space agency.
Friday, April 15, 2022
A study suggests babies are aware that people who are willing to share saliva, through kissing or sharing spoons, have especially close relationships. (Story aired on ATC on Jan. 20, 2022.)
Tuesday, April 12, 2022
A new look at some fossilized footprints shows that more than one species of human was walking upright around 3.6 million years ago. (This story originally aired on ATC on Dec. 2, 2021.)
Saturday, April 09, 2022
Scientists are tracking a deadly bird flu outbreak that has infected wild birds in more than 30 states. Purging the nation's poultry supply may not be enough to keep the virus from sticking around.
Wednesday, March 30, 2022
Scientists using the Hubble Space Telescope have spotted light from what appears to be the most distant star ever seen. It offers a glimpse into an early moment in the history of the universe.
Thursday, March 24, 2022
How do boa constrictors breathe while constricting their victims? A new study finds that snakes can switch which set of ribs they use to draw in air as they crush their meal before devouring it.
Monday, March 21, 2022
Building and operating telescopes can generate a lot of greenhouse gases. In fact, it's as if each astronomer in the world was driving more than 100,000 miles per year, a new study finds.
Wednesday, March 16, 2022
Picture perfect: Mission managers say the telescope's mirror segments have been aligned and have focused on single stars, a critical milestone, and the telescope is working flawlessly.
Friday, February 11, 2022
The James Webb Space Telescope has seen its first starlight, but its 18 mirror segments aren't yet perfectly aligned. As a result, the pictures it's sending back now aren't exactly cosmic eye candy.
Thursday, January 27, 2022
Common chemical elements are created in stars like our sun. But heavy elements, like iron, are thought to form in massive stars that explode and spew material — though it might be more complicated.
Thursday, January 27, 2022
All chimps managed by the National Institutes of Health that are currently eligible to go to a sanctuary have been moved there, but animal welfare advocates say more should be allowed to go.
Thursday, January 20, 2022
For infants, toddlers, and children, one sign of an especially close relationship is if two people do something that involves exchanging saliva, like taking bites from the same piece of food.
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.
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.
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.
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.
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.)
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.