Researchers who study developing human embryos have long limited their experimentation to lab embryos that are no more than 14 days into development. Some scientists are now pushing that boundary.
(Image credit: Courtesy of Gist Croft, Cecilia Pelligrini, Ali Brivanlou)
Despite one of the wettest winters on record, California Gov. Jerry Brown hasn't declared the five-year drought over yet. But the water shortages may to be over.
(Image credit: Rich Pedroncelli/AP)
Failure rates for the most common forms of contraception are down, but it's not entirely clear whether it's due to education, availability, or other reasons.
(Image credit: Garo/Phanie/Science Source)
On the mold market — which is a thing, apparently — this bit of green is a "holy relic": some of the mold that helped Alexander Fleming discover penicillin. And it sold for big bucks at auction.
(Image credit: Alastair Grant/AP)
Scientists say they've found the remains of tube- and string-like organisms in Canadian rocks that are at least 3.7 billion years old. But findings like these are always controversial.
(Image credit: Matthew Dodd/University College London)
Spring arrived early this year across much of the U.S. NPR's Audie Cornish talks to Jake Weltzin of the U.S. Geological Survey to find out how we know.
Snow surveyors are measuring the health of the snow pack in the high altitude Sierra Nevada. After years of drought, much of the state is now experiencing one of its wettest years on record.
In "direct primary care," a model favored by HHS Secretary Tom Price, patients pay a monthly fee to doctors for basic health care. But does that really provide better value?
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President Trump takes action to roll back another environmental regulation. The Clean Water Rule extends federal authority over smaller streams and marshes, but farmers, builders and others say it goes too far.
SpaceX claims it will launch the first ever private moon mission in 2018, which would send people to the moon for the first time in 45 years. The announcement may signify the start of a new race to the moon, this time between NASA and the private space industry.
Chicago is in dire need of solutions for its violent crime. A cognitive behavioral therapy program has been able to help keep teenage boys from acting out on their impulses.
The Obama-era "Waters of the United States" rule defines which small bodies of water are subject to U.S. authority. Opponents such as farmers, homebuilders and golf course owners say it goes too far.
(Image credit: Seth Perlman/AP)
Bad weather in southern Europe caused a brief shortage of veggies in the U.K. Prices went up and people panicked. Now they are thinking harder about where their food comes from.
(Image credit: Victoria Jones/PA Images via Getty Images)
Data suggests that the rate of colon cancer among people under 50 is on the rise, but there are lots of possible explanations for that. Scientists say teasing out the truth will be tricky.
(Image credit: Scott Camazine/Science Source)
It would be the first time humans have traveled beyond low-Earth orbit since the days of Apollo. The mission would be manned and financed by two private, anonymous customers.
(Image credit: Space X)
New research calculates the greenhouse gas emissions involved in making bread, from wheat field to bakery. The vast majority of emissions come from one step in the process: farming.
(Image credit: Daniel Berehulak/Getty Images)
More than 8 in 10 fires are started by people. Researchers say humans are not only causing the vast majority of wildfires, they're extending the normal fire season around the U.S. by three months.
(Image credit: MODIS Rapid Response Team/NASA)
National Geographic photographer Joel Sartore is on a mission to document every captive animal species in the world. He talks about getting an arctic fox to hold still, and Photoshopping out poop.
(Image credit: Joel Sartore/National Geographic)
Do you look like a Joy? Genes and culture may make it more likely that names and faces align. But researchers say people also may adjust their expressions to match social expectations of their name.
(Image credit: Courtesy of the Journal of Personality and Social Psychology)
Naltrexone was approved to treat alcohol disorders more than 20 years ago. But many doctors still don't know that when combined with counseling it can help people resist the urge to drink too much.
(Image credit: Maria Fabrizio for NPR)