Nell Greenfieldboyce appears in the following:
Thursday, May 21, 2015
Genetically, at least, not that much has changed in the billion years since you two last shared a relative. Roughly half the 500 genes yeast need for life are interchangeable with the human versions.
Tuesday, May 19, 2015
Genetic sleuthing and comparisons of recently discovered fossils with living snakes point to a "protosnake" ancestor that likely had tiny hind legs and lived about 120 million years ago.
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.
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?
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.
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?
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.
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.
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.
Saturday, March 21, 2015
Scientists outfitted some fake fungi with LEDs and put them in a Brazilian forest to test their theory that light, not some funky mushroom fragrance, was luring bugs.
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.
Thursday, March 12, 2015
Scientists announced in a NASA teleconference that the biggest moon in our solar system has a salty ocean hidden below its icy surface.
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?
Tuesday, February 10, 2015
Studying techniques for engineering our way out of climate change would be helpful — and not the same as actually trying them, says a panel convened by the National Research Council.
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.
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.
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.
Thursday, January 15, 2015
They could shoot up to 24,000 feet and maintain that altitude in a long-distance migration across the Himalayas. But it's more efficient for bar-headed geese to soar and dive, scientists find.
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.
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.