"STOCKTON, Utah — Gary McCloskey may have destroyed more chemical weapons than any man alive, but he barely reacted when the final weapons from the world’s largest stockpile of warfare agents came out of an incinerator.

"President Barack Obama's re-election campaign sought to manage fallout on Thursday from his decision to nix a new oil pipeline, putting up its first television ad of 2012 to promote his energy record."

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."