Heat Wave

Hot ball of air hits the ground near a local airport.

The past decade brought unprecedented summer heat to Europe. More may be on the way.

A silent killer, heat waves claim about 175 lives a year.

Floods, avalanches may occur more in Alps due to climate change.

Air conditioners may be making the earth hotter.

Droughts hamper carbon sinks, let carbon dioxide accumulate in atmosphere.

European heat waves longer and more common now than century ago.

Scientists plug data from a real heat wave in Europe into climate models for the United States.

More than 200 towns and cities set daily highs.