"The government plans to aggressively sterilize wild horses and transplant thousands to new public preserves in the Midwest and East as a solution to the nearly 40-year-old problem of how to manage the exploding numbers of wild horses in the West, Interior Secretary Ken Salazar said Wednesday."

"The Environmental Protection Agency plans to conduct a new study about the potential health risks of atrazine, a widely used weedkiller that recent research suggests may be more dangerous to humans than previously thought."

"Tax credits for making your home more energy efficient got a lot of early buzz. The promise of up to 1500-dollars back for insulation and windows or efficient furnaces led to a flurry of advertising." But something might be stopping people from taking advantage of the tax credits.

"The Senate Environment and Public Works Committee is hemorrhaging staff as it faces a critical test in the coming weeks to pass a comprehensive global warming bill."

"Silicon Valley investors are pointing to something called cleantech -- alternative energy, more efficient power distribution and new ways to store electricity, all with minimal impact to the environment -- as a candidate for the next boom."

"More than half of the nation's state attorneys general and two dozen interest groups have weighed in on a high-profile regulatory takings case that the Supreme Court will hear in December."