"Scientists have found evidence of a 'drastic' shift since the 1970s in north Atlantic Ocean currents that usually influence weather in the northern hemisphere, Swiss researchers said on Tuesday."

"MIT professor Kerry Emanuel is among a rare breed of conservative scientists who are sounding the alarm for climate change and criticizing Republicans' 'agenda of denial' and 'anti-science stance.'"

Rep. Fred Upton (R-MI), incoming chairman of the House Energy Committee, used to be in favor of reducing the carbon dioxide emissions which are the biggest cause of global warming. Now he is against it.

"U.S. EPA's plan to sidestep state officials and oversee climate rules in Texas has been temporarily blocked by a federal court, making the Lone Star State the only place where businesses cannot apply for greenhouse gas permits that the Obama administration now requires."

"The U.S. Environmental Protection Agency will directly enforce new greenhouse-gas rules in parts of Arizona after the state refused to submit its own program for controlling the pollutants."

"Changes in Iowa's weather patterns, landscape, cities and farms have rendered some of the state's most trusted flood prevention safeguards outmoded and inadequate, a review by The Des Moines Register shows."

"Ski resorts are getting greener, and they're seeking recognition for it -- partly to boost their image with their environmentally-conscious clientele. To educate the public and recognize the best programs, one grass-roots organization, the Ski Area Citizens' Coalition, tracks the environmental impact and efforts of 82 ski areas in 11 Western states and has issued an annual report card each of the past 11 years."

"It may be heresy to conservatives, but a trip down memory lane shows nearly all of the top-tier Republican presidential contenders want to save the planet from global warming."

Global warming has brought the mountain pine beetle to whitebark pine trees in the Yellowstone ecosystem -- with wide-ranging repercussions for the ecosystem.

The earth's glaciers and icecaps seem to be melting faster in recent years. Climate change is suspected, but the behavior of the earth's cryosphere does not lend itself to simple generalizations.