"Hydrofluorocarbons ... are ... many thousands of times more potent than CO2 as climate warming agents, and scientists say their spread could become as much as 50 percent of the global greenhouse gas problem by 2050. Yet the public is barely aware of the issue, and as the White House works to hammer out its policy, it seems to want to keep it that way."

"The world's leading industrial nations tentatively agreed Wednesday to try to prevent global temperatures from rising above a fixed level, after a more far-reaching proposal to slash production of greenhouse gases fizzled... ."

"A coalition of environmental groups is suing federal agencies in an effort to change the location of corridors to transmit energy across Western lands."

Should youth practice or play sports outdoors on days when the EPA cautions them against heavy exercise?

"Wine makers are shaking things up in their vineyards. Some of them use natural and organic methods to control pests and weeds instead of using pesticides. Now, one winery has discovered a unique, natural way to prune their grape vines."

The bark beetles devastating millions of acres of western pine forests are actually a native insect whose destruction -- like that of wildfire -- is part of a natural cycle of forest regeneration.