An unprecedented spike in Pacific trade winds has seen global warming slow significantly in the past 12 years but the effect is only temporary and temperatures will surge, a study found Monday.

The Australian-led report, published in the latest edition of Nature Climate Change, said a dramatic acceleration in equatorial trade winds blowing from the Americas to the West Pacific had boosted circulation of the Pacific Ocean.

A polar bear said to be depressed in Argentina will not move to Canada, after veterinary experts said the trip would be too dangerous to his health.

The fate of Arturo the bear, 29 years old and weighing in at 400 kilograms (900 pounds), has for months been the subject of controversy, as Greenpeace and zoo visitors questioned the animal's living conditions at the Mendoza site.

It was April 1956, and the No. 1 song was Elvis Presley's "Heartbreak Hotel." At the Woods Hole Oceanographic Institution on Cape Cod, scientist Dean Bumpus was busy releasing glass bottles into the Atlantic Ocean as part of his work to track currents.

Nearly 58 years later, a biologist studying grey seals off Nova Scotia found one of the bottles in a pile of debris on a beach.

Footprints left by ancient humans 800,000 years ago have been found in Britain, the earliest evidence of such markings outside Africa, scientists said Friday.

Researchers discovered the footprints, which were left by both adults and children, in ancient estuary mud at Happisburgh in Norfolk, eastern England.

After weeks of rain and wind in England, miserable penguins at a marine center are being fed anti-depressants to cheer them up.

The 12 Humboldt penguins at the Sealife Center in Scarborough, northeast England, were showing signs of stress as they shivered through one of the wettest winters on record.

Europe's physics lab CERN said Thursday it was eyeing plans for a circular particle collider that would be seven times more powerful than the facility which discovered the famous "God particle."

"The time has come to look even further ahead," the European Organisation for Nuclear Research (CERN) announced.

The United States said Thursday that Iceland was violating an international agreement through its whaling, opening the possibility of economic sanctions over the controversial hunt.

The Department of the Interior, in a decision it is required to take under U.S. law, found that the Nordic country's actions violated the Convention on International Trade in Endangered Species of Wild Fauna and Flora.

Arturo has been in mourning since the death of his companion in 2012. It is summer now in Argentina, and he is exhausted from the heat. A trip to cool Canada might brighten his mood.

Such is life for an aging, depressed polar bear at a zoo in Mendoza, at the foot of the Andes in western Argentina.

The next cargo supply mission to the International Space Station by the U.S. company SpaceX has been set for March 16, NASA said Wednesday.

SpaceX's unmanned Dragon capsule will launch from Cape Canaveral in Florida at 4:41 am (0941 GMT) on its third trip ferrying supplies and equipment to the orbiting lab, the U.S. space agency said in a tweet.

The two years of drought in the central United States is placing strains on the water-intense oil and gas fracking industry, according to a new study Wednesday.

Nearly 50 percent of the wells drilled since 2011 using hydraulic fracturing, aimed at exploiting hard-to-tap oil and gas deposits, are in areas with "high or extremely high water stress," according to the study by Ceres, a non-profit group promoting sustainability in business.