Nell Greenfieldboyce

Nell Greenfieldboyce appears in the following:

How Bird Beaks Got Their Start As Dinosaur Snouts

Tuesday, May 12, 2015

Hoping to help trace the history of how velociraptors evolved into birds, researchers at Harvard and Yale may have tracked a key beak transformation to two genes.

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Two Guys In Paris Aim To Charm The World Into Climate Action

Monday, May 11, 2015

It's a nightmarish job: No exercise or fresh air and little food and sleep for days at a time, all in an effort to persuade 200 countries to save Earth's climate and the planet. Can they do it?

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Missing Link Microbes May Help Explain How Single Cells Became Us

Wednesday, May 06, 2015

Near a field of deep sea vents between Norway and Greenland, scientists discovered the DNA of microbes that seem to be primitive archaea, but with a lot more genes — typical of complicated creatures.

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When Did Humans Start Shaping Earth's Fate? An Epoch Debate

Monday, April 06, 2015

Some scientists suggest calling the era we live in the Anthropocene, to denote the time when humans came to dominate Earth's fate. But did it start with farming, the atom bomb or other event?

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Ferguson Activists Hope That Momentum Sparks A National Movement

Monday, April 06, 2015

Leaders of what some call a new civil rights struggle say the protests must lead to long-term strategies. The goal is to sustain a national movement and to get past challenging obstacles.

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NASA To Study A Twin In Space And His Brother On Earth

Friday, March 27, 2015

During astronaut Scott Kelly's year in space, scientists will compare his physiology with that of his twin brother, Mark, to study the effect of prolonged space flight on the human body.

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Scientists Discover A New Form Of Ice — It's Square

Wednesday, March 25, 2015

Researchers were surprised by what they found when they sandwiched a drop of water between two layers of an unusual two-dimensional material called graphene.

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Why Some Mushrooms Glow In The Dark

Saturday, March 21, 2015

A team of scientists recently created some fake, glowing mushrooms and scattered them in a Brazilian forest in hopes of solving an ancient mystery: Why do some fungi emit light?

The question goes back all the way to Aristotle, who is the first person known to have wondered about this, ...

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Are Humans Really Headed To Mars Anytime Soon?

Tuesday, March 17, 2015

Public passion is all well and good, but it will take more than big talk to get to Mars by 2025, space specialists say. Even several rockets' worth of cash won't easily solve the technical challenges.

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Moon River? No, It's An Ocean On One Of Jupiter's Moons!

Thursday, March 12, 2015

NASA says the biggest moon in our solar system has a salty ocean below its surface.

Researchers had suspected since the 1970s that a moon of Jupiter called Ganymede had an ocean. Now they've confirmed it, scientists announced in a teleconference held by the space agency.

Ganymede was discovered ...

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Just A Bit Of DNA Helps Explain Humans' Big Brains

Thursday, February 19, 2015

Scientists have found some human DNA that, when added to mice, makes their brains bigger. But as DNA research into human brains goes forward, are there ethical lines we shouldn't cross?

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Scientific Pros Weigh The Cons Of Messing With Earth's Thermostat

Tuesday, February 10, 2015

Before anyone tries to cool the Earth with technologies that could counteract global warming, there needs to be a lot more research into the benefits and risks. That's the conclusion announced Tuesday by a scientific panel convened by the prestigious National Research Council to assess "climate geoengineering" — deliberate attempts ...

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Hunting For Big Planets Far Beyond Pluto May Soon Be Easier

Monday, February 02, 2015

Construction is starting in Chile on a new sort of telescope. One aim is to survey huge swaths of sky for faint signals of a "Planet X" that may be lurking on the farthest edges of our solar system.

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DNA Blood Test Gives Women A New Option For Prenatal Screening

Monday, January 26, 2015

A simple blood test can analyze bits of fetal DNA leaked in the mother's bloodstream. It's less risky than invasive alternatives like amniocentesis, but it doesn't tell as much about fetal health.

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Maybe Early Humans Weren't The First To Get A Good Grip

Thursday, January 22, 2015

The opposable thumb you use to hold a pencil was long thought to be a defining aspect of humans. But an analysis of finger bones suggests stone tool use by pre-humans — perhaps 3 million years ago.

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Highflying Geese Save Energy By Swooping Like A Roller Coaster

Thursday, January 15, 2015

The bar-headed goose is famous for its long, annual migration from the Indian subcontinent to central Asia, a flight that takes it over snowcapped Himalaya Mountains so high and dangerous that human climbers struggle just to stay alive.

Scientists had thought these birds might fly up to a high altitude ...

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How A Position Of Power Can Change Your Voice

Monday, January 05, 2015

Once you become the boss, it's likely that you'll start to speak quite differently. The pitch, resonance and intensity of your speech change in ways that listeners can detect as signs of power.

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Flu Vaccines Still Helpful Even When The Strain Is Different

Friday, January 02, 2015

The influenza season is under way and experts at the Centers for Disease Control and Prevention warn it may be particularly severe. We have an update on the flu and what you can do to protect yourself.

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These Froggies Went A Courtin' And Gave Birth To Live Tadpoles

Thursday, January 01, 2015

Who needs eggs? Scientists have discovered an unusual frog species that gives birth to live tadpoles.

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When Humans Quit Hunting And Gathering, Their Bones Got Wimpy

Monday, December 22, 2014

Humans have lighter bones than other primates, and that change happened a lot later than anthropologists had thought. Blame our sedentary ways after our ancestors took up farming.

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