Ocean acidification has risen by a quarter since pre-industrial times as a result of rising carbon emissions, casting a shadow over the seas as a future source of food, scientists warned Wednesday.

In the past two centuries, the sea's acidity level has risen 26 percent, mirroring the proportion of carbon dioxide it absorbs from the air, they said in a report to the U.N. Convention on Biological Diversity (CBD) meeting in South Korea.

Three Japanese-born researchers on Tuesday won the Nobel Prize for Physics for inventing the LED lamp, a boon in the fight against global warming and aiding people in poverty.

Japan put a new weather satellite into space Tuesday in the hope it can improve the forecasting of typhoons and detect volcanic gas plumes.

If you missed April's total eclipse of the moon, now's your chance. But you'll need to get up early.

Wednesday morning, if the skies are clear, North Americans will have prime viewing of a full lunar eclipse, especially in the West. The full moon will be obscured by Earth's shadow in the predawn hours. The total eclipse will last an hour — until sunrise on the East Coast.

Generations of scientists have pored over a seemingly basic but ultimately complex skill: how are humans able to find their way from one spot to another?

The deep ocean may not be hiding heat after all, raising new questions about why global warming appears to have slowed in recent years, said the U.S. space agency Monday.

A baby bear was found dead with trauma to the body in New York's Central Park on Monday, baffling conservationists who are investigating where the cub came from.

Police told Agence France Presse that officers were called to Manhattan's largest public park shortly before 10 am by a warden after the baby bear was found lying in a grassy area.

Two of 17 European bison released this spring in Romania's Carpathian mountains where they had become extinct due to poaching have died of bluetongue disease, the national veterinary agency said Monday.

They were found dead in the wild zone of the Tarcu mountains, where 17 bison from Sweden, Germany, Switzerland and Italy were released in May in one of the biggest such operations in Europe.

A U.N. conference on preserving the earth's dwindling resources opened Monday with grim warnings that the depletion of natural habitats and species was outpacing efforts to protect them.

Just a week after conservation group WWF said wildlife numbers had halved in 40 years, governments met in South Korea to analyze progress since they agreed four years ago on 20 targets for stemming the tide of biodiversity loss.

Scientists said Sunday they had pinpointed nearly 700 genetic variations that determine human height, more than tripling the haul in research that could aid the fight against stature-related diseases.