"Americans are exposed to thousands of chemicals that are potentially harmful to their health, according to a broad coalition of labor, health, and environmental organizations calling for tougher federal toxics regulation."

"Search warrants served on two Cook Inlet oil facilities last week were based on federal environmental regulators' suspicions that Chevron Corp. had knowingly violated its air pollution permits and made false statements, court filings show."

"A new US assessment of Venezuela's oil reserves could give the country double the supplies of Saudi Arabia."

"Americans today receive far more medical radiation than ever before. The average lifetime dose of diagnostic radiation has increased sevenfold since 1980, and more than half of all cancer patients receive radiation therapy. Without a doubt, radiation saves countless lives, and serious accidents are rare. But patients often know little about the harm that can result when safety rules are violated and ever more powerful and technologically complex machines go awry."

"DALLAS -- Crews worked Sunday to protect two sensitive wildlife areas after a crude oil spill shut down parts of a major southeast Texas port, state Land Commissioner Jerry Patterson said."

Many U.S. homes could be made far less expensive to heat and cool -- reducing greenhouse emissions in the process.

Measured temperatures offer evidence of manmade global warming that belie the increasing success of deniers funded by fossil fuel industries in damaging public confidence in science.

"Vermonters have been getting a lesson in radioactive tritium over the past two weeks because of the discovery of contamination at Vermont Yankee. Vermonters are not alone. Other Entergy reactors -- including plants in Massachusetts and New York -- also have similar leaks."

"A sister company to Toyota Motor Corp secured a lithium supply deal in Argentina on Wednesday that could help the world's largest automaker keep its lead in gasoline-electric hybrid cars."

"The decade ending in 2009 was the warmest on record, new surface temperature figures released Thursday by the National Aeronautics and Space Administration show."

"A $10.5 million research project aimed at mapping the DNA sequence of sunflowers could one day yield a towering new variety for both food and fuel."

"Federal officials announced two major settlements on Thursday for reducing emissions from 28 glass and cement plants across the country."

"An exhaustive report on Portland Harbor contamination -- written by industries and local government agencies that will likely have to pay for much of the cleanup -- tends to 'minimize the risks to human health and the environment' from harbor pollution, federal regulators say."

"U.S. Senator Lisa Murkowski, a leading Republican on energy policy, on Thursday moved to stop the Environmental Protection Agency from regulating greenhouse gas emissions that are blamed for global warming."

"Massey Energy President Don Blankenship and environmental lawyer Robert F. Kennedy Jr. on Thursday evening debated the future of coal and the science of climate change, agreeing on little but drawing still more national attention to the crucial issues that face the Appalachian coalfields."