"With global warming legislation sidelined, advocates are bracing for battle over U.S. EPA climate rules, the only game in town for curbing emissions of heat-trapping greenhouse gases."

"New Orleans is about to get hit with another storm, this one made up of administration officials showering attention on city's recovery on the fifth anniversary of Hurricane Katrina. In a well-organized campaign to play up what the administration has done for the city and for the state of Louisiana, President Obama will cap the parade of top officials visiting the area from today to Sunday."

A veterans group is warning that climate change could be a matter of life and death that literally puts U.S. troops in harm's way.

"A British beekeeper said on Wednesday he may have discovered a strain of honey bee immune to a parasite that has been gradually wiping out populations of the vital insect worldwide."

"A deal that secured Senate Republicans' support for a bill to clean up the Chesapeake Bay has undermined the legislation and could weaken water-pollution protections nationwide, according to four law professors who helped write the original measure."

"California's long-awaited boom in solar power plant construction took a major step forward Wednesday when state regulators approved the first in a string of projects that will soon blanket thousands of acres of desert with mirrors harnessing the energy of the sun."

The likely primary upset of Alaska Republican Sen. Lisa Murkowski could signal big changes on the GOP side of the Senate Energy Committee -- and possibly a shift toward hard-line opposition to any Democrat legislation.

"Canada is in the process of a historic move to add bisphenol-A to its list of toxic substances, Environment Canada confirmed Wednesday."

Billionaire Brothers David and Charles Koch, who own the petroleum-based Koch Industries, are among the top ten air polluters in the country and stout opponents of environmental regulation. Their empire has vastly outdone ExxonMobil in funding opposition to legislation to control climate change and has been dubbed by Greenpeace a "kingpin of climate science denial."

"Male rats exposed before birth to low doses of the weedkiller atrazine are more likely to develop prostate inflammation and to go through puberty later than non-exposed animals, finds a new study conducted by federal government scientists."