Look up at the night sky and ask, "Anybody there?" Then consider this answer (from the 1830s): There are 22 trillion individuals in our solar system.
Thousands of Chinook salmon are struggling to survive in the Klamath River, where waters are running dangerously low and warm. Cold reservoir water is instead going to farms in the Central Valley.
By analyzing the DNA found in 1,000-year-old mummies, scientists found evidence that sea mammals were the first to bring tuberculosis to the Americas.
A new study finds cancer affects even simple, ancient multicellular organisms — which means the disease and the deaths it causes may simply be a part of life.
A coffee entrepreneur claims his brew is different — and better — than the trendy civet poop coffee. And it starts with the idea that elephants, unlike humans or civets, are herbivores.
The EPA wants to "clarify" the scope of its oversight of water under the Clean Water Act. Big farm groups like the American Farm Bureau Federation call this a power grab that would place every ditch and mud puddle under federal regulation, forcing farmers to get permits for small trenches around the farm.
Long summer days in Alaska help cabbages, turnips and other vegetables grow to gargantuan sizes. These "giants" are celebrated at the annual state fair, which kicks off on Thursday.
There's a link between how children draw at age 4 and how well they perform on intelligence tests at age 14, researchers say.
Suppose two Chinese parents get on an Australian airplane and, while flying over U.S. territory, they have a baby on the plane. Can that baby be an American citizen?
The type of Ebola erupting in West Africa is closely related to one found 2,500 miles away — the distance between Boston and San Francisco. How did the virus spread so far without anyone noticing?
Across the U.S., jails hold many more people with serious mental illness than state hospitals do. San Antonio is reweaving its safety net for the mentally ill — and saving $10 million annually.
Using a new technology, scientists have created a vaccine for an emerging mosquito-borne virus. The vaccine was safe and produced some degree of immunity in a preliminary study.
A recent study tried to pin down just how many elephants have been killed by poachers. It's a lot — enough to eventually eliminate the species — but pinning down an exact death toll is difficult. The reason elephants are so hard to protect is the same that makes them so hard to count: They roam — exceptionally far.
What happens when you add folds to materials that are only a few atoms thick? Several scientists set out to find the answer — and discovered that these nano-wrinkles can be quite useful.
Author Adam Rogers says there are lots of myths about what causes hangovers. His new book Proof: The Science of Booze explores these and other scientific mysteries about alcohol's effect on the body.
Two New England towns dominated the world's ivory market from 1840 to 1940 — transforming imported tusks from African elephants into piano keys and combs. Today's residents grapple with a dark past.
Alastair Bland looks at the dangers to real sharks and the hazards of pseudo-documentaries as another Shark Week draws to a close.
An analysis by two economists finds that winners of the medal, the most significant prize in mathematics, become significantly less productive in their chosen field of study after they win the prize.
A scientific survey of coral reefs off the Florida keys is being done using the same fish-eye camera lenses that Google uses to capture street views. Scientists will use the images for research.
The extreme cold weather on the East Coast last winter has meant that some fishermen have smaller catches this summer. NPR's Linda Wertheimer talks to fishing forecaster Mitchell Roffer in Florida.