Neural efficiency reigns in brains of high-IQ individuals as they view their surroundings, a new study indicates.

If Hollywood’s right, the apocalypse will be brutal. Aliens, nuclear war, zombies, plague, enslavement by supersmart robots — none of them are good endings. Some archaeologists, however, believe an apocalypse has already come and gone. About 75,000 years ago, they say, a monster volcanic eruption nearly wiped out humankind, leaving behind only a few thousand people to repopulate the world. The explosion of Indonesia’s Toba volcano was the largest eruption of the last 2 million years. The volcano coughed up some 2,000 to 3,000 cubic kilometers of ash, enough to fill almost three-quar...

In a new study, a popular style of memory workout leaves reasoning and mental agility flat.

Continent's ancestry merges about 30 generations ago, genetic study finds