Today, Wal-Mart Stores, announced it will test two new types of heavy-duty commercial hybrid trucks and two different alternatively fueled heavy duty trucks as a part of the company's efforts to build on its progress in developing a sustainable fleet.

U.S. wind power capacity increased by 46 percent in 2007, with $9 billion invested in U.S. wind plants in 2007 alone, making the U.S. the fastest-growing wind power market in the world for the third straight year.

Far West Rice Mills in Nelson, Calif., on Wednesday dedicated a 1-MW solar array that will provide three-fourths of its electricity. The array is made up of 5,500 solar panels.

Thermal solar power uses an array of mirrors to magnify the heat of the sun and produce steam to drive electric generators and has been on the job around the world for decades.

Two reports released on Tuesday make the case that alternative forms of energy--everything from plug-in hybrid cars to solar power plants--are becoming more cost-competitive with fossil fuels.

The costs of making electricity with solar power within a decade will reach parity with power made with fossil fuels like natural gas and coal, a study announced on Tuesday

Investing in the wind power industry could pay off, but risks remain

IBM has joined forces with semiconductor process company Tokyo Ohka Kogyo to develop more efficient solar power technologies to cut the cost of the clean energy source.

The solution to the current energy crisis won't happen quickly, which could give companies focused on providing renewable alternatives to oil and natural gas time to gain a foothold.

There was a time when commercial shipping was an emissions free transportation mode that required little or no fuel. Of course there were limitations to this approach.