From not-so-humble beginnings in 1970, when 20 million participated, Earth Day has grown into a global tradition. Find out when it is, how it started, how it's evolved, and what you can do.
Scorpion venom bonded to iron oxide nanoparticles can halt the spread of brain tumors in mice by 98 percent, compared to 45 percent with the venom alone, a new study says.
Deliberately introduced to hunt beetles, invasive cane toad populations have exploded in Australia. Now scientists propose attacking the alien species with ants that feast on cane toad flesh.Video.
Although the blue-ringed octopus has long been the only species with a venomous reputation, a new study finds that all octopuses, cuttlefish, and some squid also have venom proteins.
Children of centenarians are more outgoing and less neurotic on average, a new study says, supporting previous observations that the long-lived—and their offspring—are likeable people.
ADAM is the first—but maybe not the last—robot to make a new scientific discovery, according to researchers who recently built themselves a mechanical colleague.
Cells irradiated by nuclear-bomb tests offer the first proof that the heart can partly regenerate—a discovery that could lead to new medical treatments, scientists say.
A Kazakh woman claims to be 130 years old, making her the oldest living human in history. Her doctor believes she's 130, and her passport is offered as proof, but skeptics question the claim. Video.
Anthrax may not have been shipped over from Europe—new evidence suggests Ice Age Asian migrants brought it to North America, possibly after scavenging infected animals.
