The first planting of about 250 redwood clones took place in December on a ranch near Port Orford, Ore.

NASA's planet-hunting telescope has discovered two planets that seem like ideal places for some sort of life to flourish. And they are just the right size and in just the right place.

The ban on single-use plastic bags at grocery and retail stories takes effect May 1.

A car that tells your insurance company how you're driving. A bathroom scale that lets you chart your weight on the Web. And a meter that warns your air conditioner when electricity gets more expensive. Welcome to the next phase of the wireless revolution.

In a shift in strategy, the company that wants to build an oil pipeline from western Canada to Texas said Tuesday that the project will have no measurable effect on global warming.

Construction has begun at Oregon State University on a $4.8 million facility to test a new nuclear energy technology that could be safer, more efficient and produce less waste than existing approaches.

A brutal combination of a widespread drought and a mostly absent winter pushed the average annual U.S. temperature last year up to 55.32 degrees Fahrenheit.