In the weeks leading up to today's Saturn equinox, a possible moonlet punctured one of the planet's thin outer rings, creating a glittering structure unlike anything seen before.

The planet's low-frequency hum gets most intense when storm waves batter the west coasts of Europe and North and Central America, a new study says.

The Perseid meteor shower is more than a "geek pickup line." Even this year, when the moon's glare will present stiff competition, astronomers predict a dazzling show.

In the Washington, D.C., area, acupuncture is becoming a more popular option for treating a variety of animal ailments, from arthritis and nerve damage to constipation. Video.

With a massive mirror 34 feet wide, the newly inaugurated Gran Telescopio Canarias in the Canary Islands is the largest optical observatory on Earth ... although it might not hold that title for long.

A barrage of icy comets pummeled Earth 3.85 billion years ago, leaving behind enough meltwater to create the first seas, a new study suggests.

"We don't think they are poisonous, but they certainly taste bad," an ecologist says of Australia's corroboree frog, an endangered species that has now been successfully bred in captivity. Video.

Denture wearers take note: Science is one step closer to growing replacement teeth. For the first time an honest-to-goodness tooth has grown from stem cells in a jaw.

A loggerhead sea turtle seemingly injured by a shark was recently fitted with "trial" prosthetics as part of efforts to give the rare animal fully functioning flippers. Video.

Sure, you can live without your spleen or your appendix, but evidence is mounting that these and other "useless" vestigial organs are actually hard at work keeping you healthy.

New smart-phone applications may enable the public to help scientists monitor invasive species and collect data in a fraction of the time it normally takes. Video.

Using diamonds and a laser, scientists crushed and heated methane produced from just water and minerals to create the same hydrocarbon blend found in natural gas.

Plucked from millions of images by a "Peas Corps" of volunteers, the tiny, round, green galaxies are forming stars at an exceptional rate, astronomers have announced.

Monkeys with computer chips implanted in their brains are helping researchers develop technology that could help paralyzed humans become more self-sufficient. Video.

On July 22, 2009, the moon's shadow blotted out Taiwan and a chunk of southeastern China, as seen by an orbiting Japanese satellite.