However,in the light of the new development, we have reinforced our security systems in all our airports,".

VOA: standard.2009.12.28

The first sign of trouble was a tiny burst of light in the western sky over the United States.

VOA: special.2009.07.22

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

VOA: special.2010.01.26

The four levels of rooms center on a beautiful courtyard with a glass ceiling to let light shine in.

VOA: special.2009.01.11

When the asbestos is seen in light near that wavelength, the minerals look darker than those around them.

VOA: special.2009.11.17

He was famous for painting flowers,buildings and the natural environment in a way that explored color and the changing effects of light.

VOA: special.2010.03.24

They used light-sensitive molecules to turn on and off nerve cells in the deep brain structure of mice.

VOA: special.2009.04.07

This is why there are white and light colored buildings in many warm areas of the world.

VOA: special.2009.06.19

The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you.

VOA: special.2009.04.29

Many minerals in the asbestos family can absorb light with a wavelength measuring two-point three micrometers.

VOA: special.2009.11.17

They are lit with a striking blue light and seem to glow in the dark room.

VOA: special.2009.09.18

He began experimenting with light-emitting diodes, LEDs,at his laboratory at the University of Calgary in Alberta.

VOA: special.2009.12.21

And the team says changes in time spent in light or dark environments influences eating habits.

VOA: special.2010.12.21

In most places in the world, a green light is a signal to move ahead.

VOA: special.2010.05.23