Earth Changes
Researchers with the conservation group Earthwatch found that whales are arriving in their breeding grounds off the Mexican coast malnourished.
The same thing happened just after the 1997/8 El Nino event, which warmed the waters and depleted food stocks.
Since 1979, the Arctic has been losing summer ice at about 9% per decade, but models on average produce a melting rate less than half that figure.
The scientists suggest forecasts from the Intergovernmental Panel on Climate Change (IPCC) may be too cautious.
The latest observations indicate that Arctic summers could be ice-free by the middle of the century.
William Gray, a Colorado State University researcher best known for his annual forecasts of hurricanes along the U.S. Atlantic coast, also said increasing levels of carbon dioxide will not produce more or stronger hurricanes.
He said that over the past 40 years the number of major hurricanes making landfall on the U.S. Atlantic coast has declined compared with the previous 40 years, even though carbon dioxide levels have risen.
A series of mild winters has seen swarms of brown tail moth caterpillars move from their usual habitats along the south-east coast to as far north as Yorkshire.
The brown and red grub is covered in millions of tiny hairs that contain a toxin that can cause painful rashes, eye infections and, if inhaled, serious breathing difficulties.
As the caterpillars have moved inland, environmental health officials have been putting up warning signs in popular beauty spots.
No injuries were reported and there were no immediate evacuation orders in the south-central Oklahoma town, said Mike Hancock, a spokesman for Wynnewood Refinery Co.
Flames and smoke boiled hundreds of feet into the air from two 80,000-gallon tanks in the Wynnewood Refinery complex, officials said.
Firefighters doused the area surrounding the tanks Saturday, Hancock said.
"Tank fires are pretty pesky fires. They're easy to keep contained, but they're hard to fight," Hancock said. "It's hard to estimate how long it will be. It can take a day or so to burn the product."