The Environmental Protection Agency has released its much-anticipated ozone standards. The agency is setting more stringent thresholds for the particles that contribute to smog.
The Environmental Protection Agency's new rule sets reduces the threshold for the particles that contribute to smog at 70 parts per billion, lower than than 75 ppb currently on the books. NPR's Ari Shapiro learns more from reporters Joe Wertz in Oklahoma and Mose Buchele in Texas.
NPR's Robert Siegel talks with Jeff Halverson, severe weather expert for the Capitol Weather Gang. He also teaches meteorology at University Of Maryland, Baltimore County about how and why computer models for hurricane predictions get such different results.
Drills and screws would damage the frail, 65.5-million-year-old bones of the Smithsonian's 38-foot-long Tyrannosaurus rex. So how do you make it stand? Blacksmiths in Canada are working their magic.
The movie about a stranded astronaut is being hailed for its scientific realism. Andy Weir, who wrote the book the film is based on, is a longtime computer programmer who sees romance in numbers.
A lab in Seoul is the only place in the world known to commercially clone dogs. But often the dog clones are sickly, critics say, and many other dogs are subjected to surgery in order to make a clone.
The Duponts in Louisiana loved their mutt Melvin so much they jumped at the chance to replicate him. Melvin is gone now, but he's left behind two clones, Ken and Harry.
A British study that tracked the health of thousands from childhood through midlife finds early distress to be even more potent than adult stress in predicting later diabetes and heart disease.
Republican entrepreneur Jay Faison tells NPR's Robert Siegel why his foundation, ClearPath, brought together GOP pollsters to help find a way to get Americans to take climate change seriously.
One reason is that it would take the Curiosity rover about a year to get there, even with no obstacles and no traffic. But the other reason might surprise you.
Critics say research on fetal tissue is no longer needed to answer crucial medical questions. But National Institutes of Health officials and other scientists say alternatives don't yet measure up.
A lack of crops for bees to pollinate has California's beekeeping industry on edge. Some are feeding their colonies pricey processed bee food or moving their hives out of state to forage.
Representing fields from chemistry to poetry, the 24 MacArthur Foundation Fellows will each receive $500,000 over the next five years.
The federal government is requiring farmers to keep more records on exactly when and where they used specific pesticides. And no children under the age of 18 will be allowed to handle the chemicals.
A large study confirms that a test doctors have been using for a decade works well for low-risk patients. More work is needed to draw conclusions about chemotherapy for women with riskier tumors.
Californians have really stepped up water conservation due to the drought. Some cities are selling almost half as much water as they normally do. But there's a big downside for water agencies — lost revenue. People using less water means major budget shortfalls.
Annie Duke was often the only woman at the poker table, which influenced the way people saw her. It also affected the way Duke saw herself. Psychological research shows feeling like an outsider can come at a cost, but it can also be an advantage. NPR speaks with Duke about these ideas for the new podcast, Hidden Brain.
After spending $7 billion, Shell has decided to stop exploration off the coast of Alaska "for the foreseeable future."
The streaks on the Red Planet's surface appear to be caused by salty water, but how much water there is — and where it comes from — remains a mystery.
Did you see it? If not, don't worry: this much-anticipated event — in which a supermoon went into a full lunar eclipse — was well-documented.