WBEZ 91.5 Chicago

Increasing numbers of homeowners are installing geothermal heat pumps, which take advantage of the constant temperature underground to provide more efficient heating and cooling.

Japanese officials are reporting the highest radiation readings yet near a troubled power plant since a tsunami set off the nation's nuclear crisis nearly three weeks ago.Officials say seawater outside of the Fukushima Dai-ichi nuclear power plant contains more than 3,300 times the normal amount of

Part 2 of a two-part series on the impact of Canadian oil in the U.S.Mention the words "foreign oil" and most people think of the Middle East, but the largest supplier of foreign oil to the U.S. is actually much closer.Canada ships about 2.5 million barrels of oil to the U.S.

Part 1 of a two-part series on the impact of Canadian oil in the U.S.The oil sands of Alberta, Canada, constitute one of the biggest proven oil reserves in the world.

The nuclear disaster in Japan comes at a time when some environmental groups had softened their positions against nuclear power.

As engineers in Japan struggle to bring crippled nuclear reactors under control, Americans are marking the anniversary of the worst nuclear accident in U.S. history.The partial core meltdown at Three Mile Island on March 28, 1979, was a major setback for nuclear power in the U.S.

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