The West Antarctic Ice Sheet, whose melt may be responsible for 10 percent of the sea-level rise caused by climate change, is warming twice as quickly as previously thought, a study said Sunday.

A re-analysis of temperature records from 1958 to 2010 revealed an increase of 2.4 degrees Celsius (36.3 degrees Fahrenheit) over the period -- three times the average global rise.

Italy's red racing giant Ferrari wants to go green, cutting emissions without sacrificing horsepower and working on a new hybrid model set to thrill pro-environment speed junkies.

"We're working on reducing energy consumption without forgetting that the symbol of Ferrari is performance," Matteo Lanzavecchia, head of development, told AFP at the luxury car-maker's historic factory in Maranello, a small town in the Emilia Romagna region.

Two types of ice seals joined polar bears on Friday on the list of species threatened by the loss of sea ice, which scientists say reached record low levels this year due to climate warming.

Ringed seals, the main prey of polar bears, and bearded seals in the Arctic Ocean will be listed as threatened under the Endangered Species Act, the National Oceanic and Atmospheric Administration announced.

U.S. government health regulators say a genetically modified salmon that grows twice as fast as normal is unlikely to harm the environment, clearing the way for the first approval of a scientifically engineered animal for human consumption.

The Food and Drug Administration on Friday released its environmental assessment of the AquaAdvantage salmon, a faster-growing fish which has been subject to a contentious, yearslong debate at the agency. The document concludes that the fish "will not have any significant impacts on the quality of the human environment of the United States." Regulators also said that the fish is unlikely to harm populations of natural salmon, a key concern for environmental activists.

Conservationists have expressed alarm over the low number of turtles arriving on the coast of east India and Bangladesh for the nesting season, blaming overfishing and climate change for the decline.

Between November and March, several species of sea turtle, including the Olive Ridley, travel thousands of miles to nest on the sandy shores of Sundarbans, the world's largest mangrove forest.

Outsized jaw muscles allow the black piranha to exert bite force equivalent to 30 times its bodyweight, a feat unmatched in the natural world, according to results of a finger-risking study published Thursday.

Other animals like the great white shark, the hyena and the alligator can deliver more forceful bites, but their crunching power becomes much less impressive when viewed in relation to their overall size and weight, it said.

The discovery of the Higgs Boson, an invisible particle that explains the mystery of mass, leads a list of the top 10 scientific advances of 2012 released Thursday by the U.S. journal Science.

Without the Higgs Boson, scientists believe, we and all the other joined-up atoms in the Universe would not exist.

A huge slab of sea floor near the Great Barrier Reef is in the early stages of collapse and could generate a tsunami when it finally breaks off, researchers warned Friday.

Marine geologists from Australia's James Cook University have been using advanced 3D mapping techniques on the deepest parts of the reef -- below diving depth -- since 2007 and have discovered dozens of sub-marine canyons.

The Tungurahua volcano in central Ecuador keeps spewing gas, ash and red-hot rock, forcing hundreds to evacuate from their homes.

The country's Geophysical Institute says incandescent rock shot from the crater of the 16,479-foot (5,023-meter) high mountain fell about half a mile (a kilometer) down its flanks. Explosions early Wednesday rattled windows 9 miles (14 kilometers) away, while rain-borne ash has been falling to the southwest of the crater.

Biologists say the human hand is a wonder of evolution, providing dexterity that lets our species perform activities as diverse as bricklaying, writing, ice hockey and brain surgery.

But what were the forces that, over thousands of years, sculpted our hand into the shape it is today?