Astronomers have discovered a close new world the size of Earth, where a year lasts just under 10 days....

American scientists for the first time have tried editing a gene inside the body in hope of curing a disease....

Beetle may help southern states control the Chinese tallow, a 'super invader' tree with toxic leaves and no U.S. predators...

Elegant monarch butterflies should be in Texas by now winging their way to Mexico, but a bunch of them are stuck way further north, including Canada...

The founder of Russian anti-virus firm Kaspersky Lab says that his company automatically scraped powerful digital surveillance tools off a computer in the United States...

Another rare North Atlantic right whale has been found dead, this one on an island off the coast of Massachusetts...

Researchers trying to catch and enclose the last survivors of the vaquita porpoise species captured a calf but released it because it was too young; they still see hope in the calf's capture...

Scientists say some flowers produce a blue halo, apparently to catch the attention of foraging bees...

Cancer patients increasingly are having their care guided by tumor boards, which match treatments to gene mutations...

A proposed overhaul of New Mexico's state science standards for public schools comes under intense criticism at a packed public hearing for omitting or deleting references to global warming, evolution...