A surprise ingredient may explain how lemon juice puts the squeeze on kidney stones. Lemons contain nanoparticles that, when fed to rats, block stone formation, scientists report in the Feb. 22 Nano Letters. If the tiny sacs do the same for humans, the nanoparticles might one day offer a way to prevent kidney stones in […]

It took just a 9-volt battery and a little brain zapping to turn science writer Sally Adee into a stone-cold sharpshooter. She had flown out to California to test an experimental DARPA technology that used electric jolts to speed soldiers’ sniper training. When the juice was flowing, Adee could tell. In a desert simulation that […]

The April 25 Nepal earthquake killed more than 8,000 people and caused several billion dollars in damage, but new research suggests the toll could have been a lot worse. GPS readings taken during the quake indicate that most of the tremors vibrated through the ground as long shakes rather than quick pulses. That largely spared […]

A new atlas of human genetic diversity reveals what human ancestors’ DNA may have looked like before people migrated out of Africa. Ancestral humans carried 40.7 million more DNA base pairs than people do today, researchers report online August 6 in Science. That’s enough DNA to build a small chromosome, says study coauthor Evan Eichler, […]

A close look at one protein shows how it moves molecular passengers into cells in the kidneys, brain and elsewhere. The protein LRP2 is part of a delivery service, catching certain molecules outside a cell and ferrying them in. Now, 3-D maps of LRP2 reveal the protein’s structure and how it captures and releases molecules, […]

You’d be forgiven for thinking that depression has a simple explanation. The same mantra — that the mood disorder comes from a chemical imbalance in the brain — is repeated in doctors’ offices, medical textbooks and pharmaceutical advertisements. Those ads tell us that depression can be eased by tweaking the chemicals that are off-kilter in […]

In the early morning of February 6, a devastating magnitude 7.8 earthquake struck southern Turkey, near the border with Syria. Numerous aftershocks followed, the strongest nearly rivaling the power of the main quake, at magnitude 7.5. By evening, the death toll had climbed to more than 3,700 across both countries, according to Reuters, and was […]

For mammals, one secret to a long life may be spending it living with friends and family. An analysis of the life spans and social lives of nearly 1,000 mammal species shows that species that live in groups, such as horses and chimpanzees, tend to live longer than solitary beasts, like weasels and hedgehogs. The […]

Early versions of the Bible describe Goliath — an ancient Philistine warrior best known as the loser of a fight with the future King David — as a giant whose height in ancient terms reached four cubits and a span. But don’t take that measurement literally, new research suggests. Archaeological findings at biblical-era sites including […]