Scientists at the Centers for Disease Control are trying to develop a new product that both repels and kills insects. Called nootkatone, it is found in Alaska yellow cedar trees and citrus fruit. Consumers may prefer it to DEET, and that may mean a chance to lower the chances of insect-borne disease.

"A battle over whether states can use nuisance laws to curb greenhouse-gas emissions from power plants will come to the Supreme Court Tuesday in a case that puts a twist on the debate over climate policy."

"Congress [April 14] approved a budget bill that includes a rider removing wolves in Montana, Idaho, Washington, Oregon and Utah from the federal endangered species list and sets the stage for near-term delisting in Wyoming. The measure returns control of wolf management to the states."

"The U.S. EPA is considering a ban or restriction on consumer insulation and sealant products containing a family of chemicals known as diisocyantes."

Taxpayers can't escape paying what they owe the U.S. Treasury. But for big oil companies who owe royalties, it's another matter.

"The Nuclear Regulatory Commission exists to police, not promote, the domestic nuclear industry -- but diplomatic cables show that it is sometimes used as a sales tool to help push American technology to foreign governments."

"Some of the biggest names in the oil industry -- Exxon Mobil Corp., Marathon Oil Corp. and the American Petroleum Institute -- have waded into the fight to stop the Obama administration from strengthening Clean Water Act regulation of streams and wetlands."

"At least 45 people have been confirmed dead after a furious storm that has reportedly spawned over 100 tornadoes during the past week tore through the Midwest and moved on to southern states...." Meanwhile, budget cuts in the stopgap 2011 spending bill will diminish the National Weather Service's ability to predict weather that may harm people, property, or businesses.

"47% of samples tested had the type of bacteria that most commonly causes staph infections. Food animals routinely fed antibiotics are a possible source."

State governors elected amid the Tea Party fervor are setting about dismantling laws and rules that protect people from environmental pollution, saying they are too burdensome on business.