"China's President Hu Jintao will present China's new plans for tackling global warming at a United Nations summit on climate change later this month, the country's senior negotiator said on Tuesday."

"The Tennessee Valley Authority said Monday that it would spend $43 million on economic development projects in Roane County, Tenn., the site of a huge coal ash spill at one of the authority’s power plants last December."

"Drug-resistant staph bacteria have been found on public beaches in Washington state, and beaches in other states may harbor the superbug too."

A bill to allow offshore oil leasing and a bill to ban BPA in baby bottles both died in the California legislature as it adjourned.

"Interior Secretary Ken Salazar launched the Obama administration's first coordinated response to the impacts of climate change Monday, which he said would both monitor how global warming is altering the nation's landscape and help the country cope with those changes."

"A coalition of environmental groups says U.S. EPA is 26 years tardy in limiting toxic metal discharges from coal-fired power plants and is threatening to sue the agency if it does produce the rules."

"Government scientists figure that one out of five male black bass in American river basins have egg cells growing inside their sexual organs, a sign of how widespread fish feminizing has become."

This week, California state parks officials are expected to release a list of up to 100 California parks that will be closed to save money, and the impacts will be felt far and wide.

As governments tighten their belts, it's getting harder for them to pay scientists to monitor the health of the nation's ecosystems. So increasingly, they're turning to citizens who do that kind of work for free. The Environment Report's Ann Dornfeld reports on the growing influence of these "citizen scientists".

An EPA study of possible gas drilling pollution in Wyoming has become a case in point in a national legislative battle.