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Topic: U.S. Department of Energy
Why Republicans are fighting to save the 30-cent light bulb
US boosts 'game-changer' solar technology in bid for global market share
Gas prices skid 25 cents a gallon in past month – and may dip further
Five new technologies that will change the world (and win at Jeopardy!)
Japan considers unusual fixes to contain radioactive leak
Green Economics
Can Japan's disaster help prepare the world for climate change?
Oil hits 30-month high. Natural gas prices also rise.
Japan nuclear crisis: What's in the smoke emerging from Fukushima I?
Meltdown 101: Why is Fukushima crisis still out of control?
Stocks slump amid global jitters. Tech falls.
Suddenly, spotlight on earthquake entrepreneur
Light bulbs in spotlight as senators lambaste US efficiency standards
Gas prices: 10 ways you can save at the pump
How Mideast turmoil affects oil prices. Six questions answered
America to end its search for the 'God particle'
Green energy first: New York firm seeks tidal power plant in East River
US gas prices pass $3 mark. Will anything stop them from climbing higher?
Groupon and four other firms thrived in recession. Their secret?
Gas prices hit $3 a gallon, highest in 27 months. Will they go higher?
Gulf oil spill: Offshore drilling firms threaten to go abroad
In Pictures
Harry Reid
Gas prices flat as oil market drifts
Chinese Supercomputer: How fast is a petaflop?
Stuxnet malware is 'weapon' out to destroy ... Iran's Bushehr nuclear plant?
Fuel-efficient vehicles: Three cars share $10 million prize
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