Why not get bloodwork done a few times a year, as some celebrities advise? Because too much testing can lead to false positives, abnormalities that don't threaten health, and to unnecessary treatment.
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?
During its last major drought, Santa Barbara built a desalination plant. It was never used. Now it's being reopened, but critics say desalination is costly, energy-intensive and may harm marine life.
The Large Hadron Collider at CERN, near Geneva, Switzerland, underwent a number of upgrades, including a doubling of the energy with which it can smash protons together.
The third in a set of four lunar eclipses that began a year ago and will finish in late September could be seen from the U.S. East Coast to Asia.
Many Christian denominations officially oppose legislation that would legalize medically assisted suicide. But some individual churches, pastors and congregants are lending support to the cause.
Cambridge University has unearthed one of Britain's largest medieval hospital cemeteries, containing more than 1,000 human remains. NPR's Audie Cornish and Melissa Block talked to the leader of the dig, Craig Cessford, about the new findings.
Weather permitting, a "blood moon" eclipse — the penultimate in a four-eclipse cycle — can be seen in its totality by those living on the U.S West Coast.
Would you kill a young Hitler to prevent World War II? Men are more likely to say yes, a study finds, while women weigh the moral cost of murder along with lives saved.
Travelers are bringing a nasty bacterial disease to the U.S. and spreading it to others. The bacteria cause bad diarrhea and are tough to treat because they're resistant to the top antibiotic.
Googling that fact can make insufferable know-it-alls even more sure of their superior abilities, a study finds. The mere act of searching seems to boost faith in one's knowledge.
The case of co-pilot Andreas Lubitz has focused attention on what Lufthansa, or any employer, can really know about an employee's state of mind. Requiring a psychological evaluation has risks, too.
It's related to herpes. And it infects most of the world — about half of Americans, nearly all the developing world. But don't go out and get infected. The virus has a dark side, too.
Researchers at Nevada State University have discovered a surprising truth about the most efficient way to travel on two legs.
The product is called Snus — a tiny bag of tobacco that users slip between the lip and gum. Its Swedish maker claims the product is safer than cigarettes, cigars, dip and chewing tobacco.
Scientists are still better than computers at assessing a neuron's health by looking at its shape. But an effort that includes an international series of hackathons could help speed the process.
Scientists say they've IDed the bacteria that emits that rank smell after a hard workout. Future deodorants might target that bad actor rather than blocking sweat glands or nuking all bacteria.
The new target was submitted to the UN Framework Convention on Climate Change Tuesday. Part of a plan for a new international treaty, it would give the U.S. 10 years to reach its goal.
Clinicians correctly predict a suicide attempt about half the time — no better than a coin toss. Certain tests of involuntary responses, although still experimental, aim to improve the odds.
To keep its code-breaking prowess, the NSA must recruit scores of the brightest students in math and computer science each year. But the Snowden revelations are hurting those efforts.