Dining on insects, usually more by choice than necessity, occurs in at least 100 countries — and may be better than chicken for both people and the environment.

Sidebar: Insects

Parallel universes aren’t supposed to be observable, but a cosmic crash might leave a visible sign of their existence

Iridescence could be pretty meaningful—or maybe just pretty

Former child soldiers in Africa often adjust well to community life if they receive group rehabilitation and community acceptance, studies indicate

Time-lapse snapshots of molecules show that they change shapes less often than theory predicted.

A kilometers-long ice core from Antarctica has been recording climate information for the past 800,000 years and has revealed a three millennia–long period when carbon dioxide levels in the air were lower than any previously measured.

For the first time, scientists have resurrected a piece of DNA from an extinct animal — the Tasmanian tiger. The researchers engineered mice with a piece of the long-gone marsupial's DNA that turns on a collagen gene in cartilage-producing cells.

The complexity of humans may lie not in genes but in the web of interactions among the proteins they make.

New genetic tests to distinguish viable from nonviable embryos may help eliminate risky multiple births from fertility procedures.

Human brains rewire when people lose a sense, but a new study of people who have regained vision shows that the rewired areas retain their old abilities.

Heavy cannabis smokers have increased blood levels of a protein linked to heart disease.

Two proposed studies might determine whether dark energy is real or humans live in a special place in the cosmos

Astronomers have found evidence that the icy shell of Jupiter's large moon Europa has rotated nearly a quarter-turn, which supports the notion that the moon has a subterranean ocean.

More than 1,500 young scientists flexed their mental muscles this week at the world's largest high-school science competition.