Few Clues on Dolphin Deaths in Florida Keys

Biologists are investigating whether sonar used in U.S. Navy submarine exercises or red tide bacteria contributed to the deaths of more than 30 rough-toothed dolphins in a mass stranding in the Florida Keys last week.

Quebec Begins Five-Billion-Dollar Hydro-Electric Project

Quebec began construction of a C$5 billion ($4.2 billion) hydro-electric project Thursday that will add 883 megawatts of generating capacity to the provincially owned utility's power network, officials said.

Mountaintop Meteorology Mixes High, Low-Tech Tools

Jim Salge is one of a team of four observers who man the Mount Washington Observatory. Every hour, every day, they brave the elements to record weather conditions outside their station, 6,288 feet above sea level.

Study Shows Bigger Brains Give Birds Survival Benefit

Birds with bigger brains like crows and parrots survive better than their dimmer feathered friends, according to a study published on Wednesday.

Gene-Engineered Cows Resist Mad Cow Disease, Study Shows

U.S. and Japanese scientists reported Sunday that they had used genetic engineering to produce cattle that resist mad cow disease.

Scientists Work on Map of Climate Change

Scientists in Antarctica spent Christmas Day finishing work that may show the effects of global warming -- drilling for clues about how massive ice sheets responded to past temperature changes.

Taiwan Quake Shakes Confidence in Undersea Links

The earthquakes that hit Taiwan on Tuesday rocked communications in Asia and underscored the vulnerabilities of a system where huge amounts of data speed through the region in cables laid deep beneath the sea.

Researchers Use Yellowstone As CO2 Lab

Researchers studying plants and trees near Yellowstone National Park's thermal vents hope to glean an indication of how rising carbon dioxide emissions could affect vegetation worldwide a century from now.

Thailand Tree Apes Use Song As Warning

Turns out humans aren't the only primates using songs to warn of life's dangers and travails. White-handed gibbons in Thailand's forests have been found to communicate threats from predators by singing.

Settlers Eyed in Australia Extinctions

Australia's giant prehistoric animals, including 10-foot-tall kangaroos and wombat-like creatures as big as a rhinoceros, were likely wiped out by aboriginal settlers, not climate change, a researcher said Tuesday.

Indian, Chinese Team to Map Glacier Melt

A joint Indian-Chinese team plans to chart remote Himalayan glaciers that scientists fear are rapidly melting because of global warming, threatening the great rivers that give life to one of South Asia's most fertile regions.

Japan Researchers Film Live Giant Squid

A Japanese research team has succeeded in filming a giant squid live -- possibly for the first time -- and says the elusive creatures may be more plentiful than previously believed, a researcher said Friday.

Scientists Rebut Big Easy Channel Report

A group of scientists accused the Army Corps of Engineers on Thursday of endangering the city's future by failing to take steps to immediately close a shipping channel blamed for widespread flooding during Hurricane Katrina.

Report Says Tides Affect Speed of Antarctic Ice Slide

Tides affect the speed at which an Antarctic ice sheet bigger than the Netherlands is sliding towards the sea, adding a surprise piece to a puzzle about ocean levels and global warming, a study showed on Wednesday.

Virgin Dragon Prepares to Give Birth

In an evolutionary twist, Flora the Komodo dragon has managed to become pregnant all on her own without any male help. She is carrying seven baby Komodo dragons.

Octopus Study Shows Way to Save Fish Stocks

Protecting marine areas for even relatively brief periods can significantly restore depleted fish stocks, scientists said on Monday, citing a study of octopus catches in Madagascar.

Biologists Hunt Invasive Pythons in Florida

Critters that pythons find most delectable -- raccoons, possums, muskrats and native cotton rats -- are already under attack, as are birds such as the house wren, pied-billed grebe, white ibis and limpkin.

South Korean Team Produces Three Cloned Dogs

A team of South Korean scientists once led by disgraced stem-cell researcher Hwang Woo-suk said on Monday they had produced three cloned copies of a female Afghan hound.

Gore Urges Scientists to Be More Active

Former Vice President Al Gore said Thursday there was a "temptation" to suppress scientific findings that don't agree with policy and urged scientists to take a more active role in communicating research with the public.

Scientist Says New Data Backs Sulphur Climate Plan

Nobel Prize laureate Paul Crutzen says he has new data supporting his controversial theory that injecting the common pollutant sulphur into the atmosphere would cancel out the greenhouse effect.