Summertime and the grilling is easy... but how environmentally friendly is it? Which type of grill is greener: gas or charcoal?

"The goal of a new CDC Website, the National Environmental Public Health Tracking Network, is to become a one-stop shop for anyone who wants to investigate environmental causes of illness, from asthma to well water."

Tough new efficiency standards haven't killed the incandescent light bulb -- but instead are spurring inventors to make better ones.

"Wildlife biologists and climate scientists overwhelmingly agree that the disappearance of Arctic sea ice will lead to a sharp drop in polar bear populations. But some skeptics remain unconvinced, and they have managed to persuade the Canadian government not to take key steps to protect the animals."

"The Senate climate debate cranks up this week with a series of hearings and high-level meetings aimed at producing legislation that can be matched up with last month's House-passed bill."

Urban farmer Will Allen, half a mile from Milwaukee's biggest housing project, is different from others in the good-food movement.

Terry Tamminen, former environmental advisor to California's Gov. Schwarzenegger, is a key player on global climate change now.

"A plan to restore salmon runs on California's Sacramento River could help revive killer whale populations 700 miles to the north in Puget Sound."

Voting with the GOP might seem like an easy political choice for Idaho Democrat Walt Minick. But could it be a problem when he needs clout to help the state?

"Studies Are Homing in on Which Particles Polluting the Air Are Most Sickening -- and Why"