Originally thought of as a nifty way of recycling, shredded tires used as surfacing on playgrounds may in fact be harmful. Arsenic, lead and mercury are among the contaminants that could be being released into the air, leading the EPA to investigate.

The new 70-foot-high billboard outside Madison Square Garden and Pennsylvania Station may seem just like any other in the Big Apple. But its purpose is a new one -- it's tracking tha amount of greenhouse gases in the Earth's atmostphere.

The U.S. House of Representatives plans to vote as early as next week on a bill that would significantly reduce the carbon dioxide pollution many experts have been pointing to as the reason behind global warming. Get the details here. 

 

President Obama faces head-on what has been called "one of his biggest environmental challenges" -- the United States' oceans. Check out his plan for how we can best make efficient uses of our country's waters.

It's easy to toss garbage in the can, but what happens once that trash leaves your home? One San Francisco-based reporter finds out.

While investigators searched last week for wreckage resulting from the deadly crash of Air France flight 447, they discovered something else -- a human-initiated trash can in the middle of the Pacific Ocean. Ladies and gentlemen, your looking at the Great Pacific Ocean Garbage Patch and it's killing the Earth.

Forget human ingenuity - the best source of ideas for cutting-edge technology might be in nature, according to experts in 'biomimicry.'

Giant jellyfish are taking over parts of the world's oceans due to overfishing and other human activities, researchers say.

Since January, cows at 15 farms across Vermont have had their grain feed adjusted to include more plants like alfalfa and flaxseed — substances that, unlike corn or soy, mimic the spring grasses that the animals evolved long ago to eat. As of the last reading in mid-May, the methane output of the herd had dropped 18 percent.

The Pentagon, the CIA, and a host of other national security experts are concerned about climate change too.