Best Inventions of 2007

From the phone that has changed phones forever, to futuristic cars, to a building made of water, to a remote-controlled dragonfly — a dazzling display of ingenuity

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Bricks Inventors Inventions Best of the Rest 2007

John B. Carnett / Popular Science

Each year coal-fired power plants dump millions of tons of mercury-laced ash into landfills. Henry Liu has found a way to compress this waste into fly-ash bricks that are eco-friendlier than their clay counterparts. The bricks conserve energy (they're made at room temperature), and tests suggest they may even suck mercury out of the surrounding air.
Available 2009
greenestbrick.com

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