"Canada’s fabled Northwest Passage will not open up to shipping anytime soon, according to a study that warns global warming is a double-edged sword for northern transportation."

"For Republican presidential contenders who once supported combatting global warming, the race is heating up. Faced with an activist right wing that questions the science linking pollution to changes in the Earth's climate and also disdains big government, most of the GOP contenders have stepped back from their previous positions on global warming."

UK -- "Freedom of information laws are being misused to harass scientists and should be re-examined by the government, according to the president of the Royal Society."

Most observers agree that this spring's spate of killer tornadoes is highly unusual by statistical and historical standards. After that, the disagreement starts. Is it a fluke? -- or a sign of La Nina or climate change? Why haven't better warnings helped?

"A California judge has suspended the implementation of an emissions cap-and-trade scheme till air regulators can examine alternatives, dealing another setback to an ambitious program that could serve as a model for other states."

Climate scientists have never had stronger evidence that human emissions are causing global warming. Yet House Republicans are busy passing legislation to repeal the scientific findings and end the research programs that collect evidence on climate.

"Heavy rains, deep snowfalls, monster floods and killing droughts are signs of a 'new normal' of extreme U.S. weather events fueled by climate change, scientists and government planners said on Wednesday."

"The rare Canada lynx, whose range has shrunk considerably in recent decades, faces a grave threat from rising temperatures in Maine, federal wildlife experts said on Tuesday."