Plants naturally take in carbon dioxide they need for photosynthesis, the process of changing light energy to chemical energy.

VOA: special.2010.01.26

In the north London neighborhood of Haringey, some young people are using their energy to do positive things.

VOA: special.2011.08.13

In the United States, many people are also giving their time and energy to collect money and goods for the earthquake victims.

VOA: special.2010.02.05

Both teams,however, were able to provide more than enough energy to meet the requirements of the competition.

VOA: special.2009.10.27

The program in India won an Ashden Award in two thousand six for using local sources of energy to improve quality of life.

VOA: special.2009.08.17

Cooler building temperatures in the winter could require more energy to heat the buildings.

VOA: special.2010.03.02

Then they use radio frequency energy to heat the tissue around the catheter.

VOA: special.2010.03.02

Last week,leaders of the House Energy and Commerce Committee sent letters to some of the leading mobile device developers.

VOA: special.2011.05.02

He says when it comes to saving energy and money, big changes start with small steps like turning out the lights.

VOA: special.2010.03.22

Your name is in the title, 'cause I've learned, and Don't dedicate time, energy And poems To what's not built to last.

VOA: special.2009.04.17

Others carried out energy studies of city school buildings to make sure the equipment and systems work effectively.

VOA: special.2009.09.04

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

VOA: special.2009.10.23

He said his plan would balance the need for energy with the need to protect natural resources.

VOA: special.2010.05.01

To support more clean energy production, the Obama administration has been seeking billions of dollars in government loan guarantees to build new centers.

VOA: special.2011.03.18