"There might be a scientific reason that the old-growth trees in Yosemite National Park don't seem quite as big or as plentiful as those in your grandfather's early snapshots of the park."

The Obama EPA, like the Bush EPA, is cleaning up fewer Superfund hazardous waste sites -- saying the remaining sites are getting harder to clean up. Unline Bush, however, Obama is seeking to reinstate the lapsed tax on petrochemical companies that originally funded the cleanup of abandoned sites.

The new Sierra Suntower in Southern California's Antelope Valley uses 24,000 mirrors to concentrate light onto a tower that generates steam -- and enough electricty to power 4,000 local homes.

"The changing global climate will pose profound strategic challenges to the united states in coming decades, raising the prospect of military intervention to deal with the effects of violent storms, drought, mass migration and pandemics, military and intelligence analysts say."

"As California entered a severe drought, many of the city of Sacramento's biggest water users increased their watering dramatically."

After years of complaints, federal agents raided the CES Environmental Services waste-processing facility in southeast Houston.

"In rural west Michigan, food processors have sprayed so much wastewater onto fields that heavy metals seeped into groundwater, contaminating wells."

"Three major glaciers in Alaska and Washington state have thinned and shrunk dramatically, clear signs of a warming climate, according to a study released Thursday by the U.S. Geological Survey."

When FDA researcher Renee Dufault found residual mercury in high fructose corn syrup in 2004, the FDA ordered her to stop investigating. Mercury is used to make lye -- and lye is used to make the corn syrup that constitutes one in every ten calories that Americans eat.

EPA Administrator Lisa P. Jackson said the agency will look at new evidence in reconsidering the Bush-administration decision not to regulate perchlorate in drinking water.

DuPont will try to persuade New Jersey state drinking water regulators to go easy on cleanups of PFOA, a chemical used in non-stick pans -- even before the regulators hear scientific evidence from their own scientists.

"The U.S. Senate approved and sent to the White House on Thursday a $2 billion extension of the 'cash for clunkers' autos sales incentive program."

"Seeking to put the nation back in the lead on an important technology, the Obama administration awarded more than $2 billion in grants on Wednesday for manufacturing advanced batteries and other components for electric cars."

The American Coalition for Clean Coal Electricity (ACCCE), whose PR contractors have been caught forging letters to Congress, is launching a $1 million campaign to send an army of "volunteers" to town hall meetings on climate change legislation -- in an effort similar to the shout-downs and occasional mob violence now being deployed against health care.

"Iowa’s three largest public universities have determined that their coal ash disposal method does not pose a risk to the public health, a decision some say was made without sufficient evidence or regard for experiences with contamination in neighboring states."