So they work well in places like electric motors in hybrid vehicles or generators for wind turbines.

VOA: special.2010.10.08

Many people think the search for cleaner energy leads only to renewable resources like sun,wind and water.

VOA: special.2009.10.23

The waters can look so still and blue, like a painting, though they can also become rough with waves when the wind blows.

VOA: special.2009.01.05

"We-all," said the woman, in a voice like the wind blowing through pine trees,"wants a divorce."

VOA: special.2009.11.14

The action of wind and water can form cave openings like natural rooms within the rock.

VOA: special.2009.07.20

It's so true it's like the wind. You cannot see it, but you can feel it."

VOA: standard.2010.04.05

Some mountainous regions benefit from hydropower. Less than four percent of the nation's electricity demand is met with renewable sources like solar and wind power.

VOA: standard.2010.03.23

"The next thing is to work out how technology can be transferred from rich countries to poor countries and this will involve things like investment in renewable energy, investment in wind power and solar, investment in more efficient power stations,"

VOA: standard.2009.11.04