Several hot days that follow each other are considered a heat wave.

VOA: special.2010.07.27

The land can also release nitrous oxide, a heat-trapping gas.

VOA: special.2009.07.28

Heat exhaustion may also produce a feeling of sickness, a fast heartbeat,breathing problems and pain in the head,chest or stomach.

VOA: special.2010.07.27

Experts say any device used to heat a home should be inspected to make sure it is working correctly.

VOA: special.2010.02.02

The C stands for cover. Wear a hat and scarf to keep heat from escaping through the head, neck and ears.

VOA: special.2009.12.23

He explains that as the water freezes, it produces heat,and the ice forms a protective blanket around the tree.

VOA: special.2010.01.12

The Kansas State University study, however, may show a way that reduces risk for people who grill on high heat.

VOA: special.2010.06.01

Obsidian is a kind of black glass formed when the heat of a volcano melts the silica material in sand.

VOA: special.2009.09.16

The Kansas State University study, however,may show a way that reduces risk for people who grill on high heat.

VOA: special.2009.05.19

They found that a city with only white rooftops could reduce the urban heat effect by thirty-three percent.

VOA: special.2010.03.02

By nineteen forty-five, there was a lot of heat in a lot of different areas -- professional baseball was certainly feeling that.

VOA: special.2009.04.05

But as if it depended upon that hot-blooded princess, her soul at a white heat under the fires of sadness and jealousy.

VOA: special.2009.04.18

This could be a serious problem. The shield protected the spacecraft from burning up from the extreme heat of re-entering the Earth's atmosphere.

VOA: special.2009.06.17

(THE WHO - "SUMMERTIME BLUES") The Lovin' Spoonful was a band that did not love summers in the city because of the heat.

VOA: special.2009.06.22