Nell Greenfieldboyce

Nell Greenfieldboyce appears in the following:

Billion-Dollar Gamble: How A 'Singular Hero' Helped Start A New Field In Physics

Sunday, May 19, 2019

In the 1970s, Rich Isaacson was presented with what seemed like a crazy idea: using lasers to detect gravitational waves. It became the biggest project the National Science Foundation had ever funded.


Asteroid Simulation Reveals How Well Earth's Planetary Defenses Work

Friday, May 03, 2019

Asteroid experts have been simulating a large asteroid heading towards Earth. Friday is the conclusion to the realistic simulation and will reveal how well planetary defense efforts work in this scenario.


This Week, NASA Is Pretending An Asteroid Is On Its Way To Smack The Earth

Monday, April 29, 2019

A fictitious asteroid is the focus of a realistic exercise, as experts at the Planetary Defense Conference run through how they would respond to news of a looming asteroid strike.


Scientists Restore Some Function In The Brains Of Dead Pigs

Wednesday, April 17, 2019

The cells regained a startling amount of function, but the brains didn't have activity linked with consciousness. Ethicists see challenges to assumptions about the irreversible nature of brain death.


Scientists Have Taken The First Photo Of Something That's Invisible — A Black Hole

Wednesday, April 10, 2019

The swirling mass around a black hole is called an "event horizon," the point of no return beyond which not even light can escape. Scientists unveiled the first image of this on Wednesday.


How A Cosmic Collision Sparked A Native American Translator's Labor Of Love

Sunday, March 31, 2019

On April 1, astronomers will start two huge machines and continue hunting for ripples in space-time. One scientist gets his mom to translate news of each discovery into her native language, Blackfoot.


After A Century, A Voice For The U.S. Salt Industry Goes Quiet

Saturday, March 30, 2019

The Salt Institute spent decades questioning government efforts to limit Americans' sodium intake. Critics say the institute muddied the links between salt and health. Now it has shut its doors.


How Mosquitoes Sniff Out Human Sweat To Find Us

Thursday, March 28, 2019

Female mosquitoes searching for a meal of blood detect people partly by using a special olfactory receptor to home in on our sweat. The finding could lead to new approaches for better repellents.


How The First All-Female Spacewalk Could Be Foiled By A Spacesuit

Tuesday, March 26, 2019

The first all-female spacewalk was called off for want of the right-sized spacesuit. NASA has long been questioned about how its limited number of suit sizes disproportionately affects women.


Massive U.S. Machines That Hunt For Ripples In Space-Time Just Got An Upgrade

Tuesday, March 19, 2019

The twin sites in the Laser Interferometer Gravitational-Wave Observatory are about to go back online. New hardware should make them able to sense more colliding black holes and other cosmic events.


SpaceX Readies For Key Test Of Capsule Built To Carry Astronauts Into Space

Thursday, February 28, 2019

For years, NASA has had to rely on Russian vehicles to get astronauts to the International Space Station. That could soon change if the flight test of SpaceX's Crew Dragon capsule succeeds.


How Do You Preserve History On The Moon?

Thursday, February 21, 2019

As the 50th anniversary of the Apollo 11 lunar landing nears, some say the site of the first footprints on the moon should be protected. But historic preservation off our planet is unprecedented.


The Power Of Martin Luther King Jr.'s Anger

Wednesday, February 20, 2019

Martin Luther King Jr. dealt with anger in both his personal life and life's work. He often tried to turn his anger into constructive action, but he did occasionally struggle with that balance.


Hungry Deer May Be Changing How Things Sound In The Forest

Wednesday, February 13, 2019

Sound travels differently through open fields than the woods. When deer eat up bushes, small trees and other forest plants, it affects the transmission of bird calls and other natural sounds.


If You're Often Angry Or Irritable, You May Be Depressed

Monday, February 04, 2019

Physicians have been taught to look for signs of hopelessness, sadness and lack of motivation to help them diagnose depression. But anger as a depression symptom is less often noticed or addressed.


You Don't Look A Day Over 100 Million, Rings Of Saturn

Thursday, January 17, 2019

A new study shows that Saturn's rings are only 10 million to 100 million years old, much younger than the planet itself.


A Blue Clue In Medieval Teeth May Bespeak A Woman's Artistry Circa A.D. 1000

Wednesday, January 09, 2019

Analysis of fossilized dental tartar of a medieval woman buried in a German monastery reveals specks of blue to be lapis lazuli — a luxurious pigment used to create gorgeous illuminated manuscripts.


Biological Cartographers Seek To Map The Trillions Of Cells In The Human Body

Saturday, January 05, 2019

There's an effort underway to make a new atlas of all the cells in the human body, and to describe each cell type using all the powerful tools of today's genetic technology.


A Look At The Methodical Plan China Has Laid Out For Space Exploration

Thursday, January 03, 2019

China's space program has landed a wheeled rover on the far side of the moon that's never seen from Earth. It's part of a systematic plan that the country has for space exploration.


Images Reveal A 'Snowman' At The Frigid Outer Reaches Of Our Solar System

Wednesday, January 02, 2019

Scientists say Ultima Thule, a newly explored world out beyond Pluto, is a relic from our solar system's earliest days.