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Cf our own top 10, but specific stories rather than trends.

The Top 10 alternative energy lobbying groups are largely biofuel, solar and wind trade groups, though the biggest contributor by far is the "American Coalition for Clean Coal Electricity,"

For at least a decade, carmakers have been professing their deep and abiding interest in electric-drive vehicles whenever possible. But until recently, it wasn't always clear which of them were really sincere. Today every last one of them seems sincere. As this year's "Top 10 Tech Cars" package shows, ever more varied hybrids are going into mass production, along with-you betcha-a few all-electric cars. Some of the electric-drive machines aspire beyond mere greenness to heart-pounding performance, an aspiration that may seem strange to those taught to view electric cars as spacious, all-weather golf carts. But performance is indeed a logical goal, given the instant-on torque that electric motors provide. While electrons may now be a recurrent theme of our annual Top 10 automotive reports, we do not slight the internal-combustion engine, which has lots of life-and technological enhancements-to come. And for those who don't spend a whole lot of time worrying about whether they're treading lightly enough on the planet's roads, we include two ultraperformance German sports cars that run purely on gasoline and adrenaline. One can easily be yours. If you're willing to trade in your house for it.

Forbes has ranked the planet's top 10 most efficient countries, as measured in BTUs per U.S. dollar of GDP.

It seems cruelly ironic that tapping into Southern Nevada's vast solar energy potential could slowly drain our desert. Traditional solar thermal power plants that use wet cooled technology require millions of gallons of water over time in the process of converting solar rays into clean, renewable power for our community. Southern Nevada received some good economic news last month when Solar Millennium, a division of one of the world's top solar power generators, announced new plans to use a "dry-cooling" system on two proposed solar power plants in Amargosa Valley, 90 miles northwest of Las Vegas. This dry-cooling system will use 90 percent less water than previously planned.

pic\nIn Pictures:\nThe World's Biggest Clean-Energy Projects\n\nRelated Quotes \n \n\n Related Stories \nThe Brighter Side Of Green \nThe Greening Of The Hill \nIn Pictures: The World's Biggest Clean-Energy Projects \nIn Pictures: Top 10 Up-And-Coming Tech Cities \nOil's Wakeup Call \n\n \n\nThe Middle East is hardly known as the capital of clean energy, but Bahrain and the United Arab Emirates are trying to change that

It would be interesting to compare with our own world records list at http://www.leonardo-energy.org/drupal/taxonomy/term/89

On electric vehicles, we need to be very careful to distill the announcements which represent real products, backed up by organisations with manufacturing facilities.