"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."

"A second-generation scarlet Sea Snake is being prepared to harness the waves of Britain's northern islands to generate electricity."

The dense, multiyear ice that holds the polar ice cap together is disintegrating, and scientists say it is not coming back.

"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.

"Too many boats and technology that is too good mean that nations must cooperate to preserve tuna and other fish stocks."