Dot Earth's Andrew C. Revkin summarized it best in his account of President Obama's Keystone XL pipeline decision: "How did oil markets react? Zz.z.zz."

"When it comes to the fate of the 1,700-mile Keystone XL pipeline, proponents and foes agree that the fight did not end with President Obama’s decision Wednesday to reject the pipeline’s permit application. The question is how the battle will be waged in the months to come."

EPA's "Documerica" photo archive, suppressed by the Reagan administration and forgotten for years, is being revived. It provides a stunning series of "before" pictures as a context in which to place the pollution control now under assault by Republicans. And it offers cash-strapped journalists a treasure-trove of copyright-free graphics.

"For the past 30 years, botanist Nicholas Money has studied the microorganisms that most people associate with bad smells, itchy toes, damp basements and rotten food. A renowned fungal researcher at Miami University in Ohio, Money has devoted his career to studying indoor molds, fungal movements and the mysterious world of mycology."

"Since falling to a low of 100 in 1999, the Catalina Island fox has rebounded to a number — 1,542 — above its previous level, thanks to conservationists' efforts."

"So much for embracing climate science as a Republican presidential candidate in 2012. The demise of Jon Huntsman's White House hopes leaves GOP climate moderates without a champion in the remaining Republican field, especially given front-runner Mitt Romney’s efforts to convince global warming skeptics that he’s one of them. And that raises questions about how the party’s eventual nominee will fare with science-minded voters against President Barack Obama in November."

"A review suggests that the Amazon rainforest may be changing, courtesy of human impacts on the region's weather."