Saturday's magnitude-7.8 quake released stress that was building for 150 years, scientists say, and it reshuffled tension to nearby faults. There's a 50-50 chance of a strong aftershock within a year.
A small dose of aspirin taken regularly can help prevent a second heart attack or stroke. But too many healthy people are taking the drug for prevention. And for them, the risks may outweigh benefits.
Dallas Mildenhall is one of the world's few forensic pollen experts. He recently identified a rare, mutated pollen grain that helped police crack a murder case in his native New Zealand.
Amid this week's hoopla celebrating the Hubble Space Telescope, don't forget the clever astronomer for whom the space scope was named. In the 1920s, he changed our sense of ourselves and the universe.
Many species have gone extinct because humans hunted them into oblivion for their meat. But there's another group of animals that are endangered because we've lost interest in breeding them.
Once embraced by cities for its beautiful white flowers, disease resistance and ability to grow just about anywhere, the Callery pear is now considered a nuisance due to its smell and invasive nature.
Early next month, California plans to finalize its emergency water conservation plan. Cities are under the gun to cut their water usage from anywhere between 15 and 40 percent.
The newly discovered chamber is 4.5 times larger than the shallow reservoir already known and contains enough partially molten rock to fill the Grand Canyon 11 times.
The U.S. epidemic of injected opioid use could lead to more severe outbreaks of HIV and hepatitis C, like those now occurring in Indiana, the Centers for Disease Control And Prevention says.
Negative feedback is supposed to be good for us, but it sure doesn't feel so good. Shifting the context by thinking more broadly helps blunt the sting, a study found. So does embracing change.
The world's largest ant colony stretches over 3,700 miles. It succeeds, biologist Deborah Gordon says, because no one is in charge. They communicate with algorithmic patterns to survive and thrive.
Launched shortly after the fall of the Berlin Wall, the Hubble telescope isn't showing its age. Astronomers and other fans hope this old charmer will be useful for many years to come.
NPR has this tribute to the Hubble Space Telescope — a parody of Iggy Azalea's "Trouble."
Friday marks 25 years since the Hubble Space Telescope was launched. Astrophysicist and NPR blogger, Adam Frank, celebrates what it's shown us.
Friction between close business partners is the reason many startups fail. But increasingly in Silicon Valley, co-founders of companies are turning to therapists before things go south.
A doctor-scientist's long quest to help children with a rare form of brain cancer has led to the discovery that high levels of brain activity can make glioma tumors grow faster.
By editing the genes in embryos in the lab, Chinese scientists showed that it's possible to change hereditary traits that cause a blood disorder. But the work also created unintended mutations.
They tried a technique for editing DNA to change the genes in a human embryo. This is very controversial. The scientists say they did it to see if they could fix a gene that causes a blood disorder.
In Michigan's orchard country, extreme heat and cold can mean disaster for fruit growers. Now some are using a new twist on old technology to fool trees when sudden, unexpected weather changes occur.
"Climate change can no longer be denied," Obama said. "It can't be edited out. It can't be omitted from the conversation. And action can no longer be delayed."