"James E. Hansen, the climate scientist who issued the clearest warning of the 20th century about the dangers of global warming, will retire from NASA this week, giving himself more freedom to pursue political and legal efforts to limit greenhouse gases."

"...Over the past couple of years, the number of monarch butterflies that reach the Mexican sanctuaries has been declining, generating concern among rural communities that rely on spillovers of butterfly tourism activities, as well as entomologists, biologists, ecologists and monarch aficionados around the world. ..."

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"WASHINGTON -- More than 4 out of 5 Americans want to prepare now for rising seas and stronger storms from climate change, a new national survey says. But most are unwilling to keep spending money to restore and protect stricken beaches."

"Canada has become the first country to drop out of the UN convention to combat desertification."

"Snow-surveying crews across the Sierra are seeing bad news up close this week. California has about half a snowpack."

"The Arctic Ocean reached the most frozen it's going to get this year on 13 March. Now the melt season begins, predicts the National Snow and Ice Data Center (NSIDC). The seasonal stats were gloomy. The max sea ice area of 2013 was was 5.84 million square miles (15.13 million square kilometers). That's the sixth lowest extent on record and a whopping 283,000 square miles (733,000 square kilometers) below the 1979 to 2000 average maximum."

"Energy subsidies cost governments from the U.S. to Egypt $1.9 trillion, discourage private investment and help wealthy consumers more than the poor, according to a study by International Monetary Fund staff."

"By the time today's K-12 students grow up, the challenges posed by climate change are expected to be severe and sweeping. Now, for the first time, new federal science standards due out this month will recommend that U.S. public school students learn about this climatic shift taking place."

"CARLSBAD, N.M. -- Just after the local water board announced this month that its farmers would get only one-tenth of their normal water allotment this year, Ronnie Walterscheid, 53, stood up and called on his elected representatives to declare a water war on their upstream neighbors."

"WASHINGTON -- The Obama administration on Tuesday announced a nationwide plan to help wildlife adapt to threats from climate change."