One reason is that heat from the sun can go through many of the building materials commonly found in cities.

VOA: special.2010.03.02

It says ultraviolet radiation from the sun can reach you on cloudy days, as well as bright and sunny ones.

VOA: special.2010.07.06

The answer: solar panels. Energy from the sun powers the satellite dishes and computers that link the areas with the world outside.

VOA: special.2009.02.16

The total energy reaching Earth from the sun rises and falls by just one tenth of one percent across this solar cycle.

VOA: special.2009.09.29

They gathered to see buildings that get all the power they need from the sun.

VOA: special.2009.10.27

Solar water heaters are devices that use energy from the sun to heat water.

VOA: special.2009.04.20

They also provide shade from the sun, so they reduce cooling costs in summer.

VOA: special.2009.09.08

The planet's orbit lies about four billion five hundred million kilometers from the sun.

VOA: special.2011.07.27

Ultraviolet light from the sun changes a substance in the skin into vitamin D.

VOA: special.2009.04.21

Carbon dioxide and other gases in the atmosphere trap heat from the sun.

VOA: special.2010.01.19

Light and heat from the sun can change chemicals in the skin.

VOA: special.2010.07.06

This is because the light we see from the sun is white.

VOA: special.2010.01.05

The main cause of skin cancer is ultraviolet radiation from the sun.

VOA: special.2010.07.06

That will add warmth from the sun and protect them from wind.

VOA: special.2009.04.21

Power came from the sun. Water was cleaned and re-used.

VOA: special.2010.05.30

They provide windbreaks and shade from the sun.

VOA: special.2009.09.01

And he stresses that it should reduce the cost of generating power from the sun.

VOA: standard.2010.02.19

A new way of making solar cells promises a cheaper way to generate electricity from the sun and new ways to integrate solar power into other products.

VOA: standard.2010.02.19

But another engineering student from India,Bikramjeet Singh Grewal, says he does not have time for much fun in the sun.

VOA: special.2010.05.27

Their bodies,burned by the sun and stained yellow from the raft dye, had winnowed down to skeletons.

VOA: special.2011.05.04

The answer is yes. However, you first must take the steps necessary to protect yourself and your family from the dangers of the sun.

VOA: special.2010.07.06

It is also important to wear a hat and sunscreen lotion to protect your skin from being burned by the very hot African sun.

VOA: special.2009.08.19

When bad weather prevented navigators from seeing the sun,moon or stars, they had to use a method called "dead reckoning" to find the ship's position.

VOA: special.2009.12.23

She remembered how the white heron came flying through the golden air and how they watched the sun rise together from the top of the world.

VOA: special.2010.04.03

As the sun sets, hundreds of people from nearby villages gather around a crackling bonfire to celebrate a unique event.

VOA: standard.2010.06.07

Qi Sun is the lead author of a new report from the Harvard School of Public Health.

VOA: standard.2010.06.25