The solar energy you haven't heard of

… Is the one best suited to generate clean electricity for generations to come

SALON — One of oldest forms of energy used by humans — sunlight concentrated by mirrors — is poised to make an astonishing comeback. I believe it will be the most important form of carbon-free power in the 21st century. That's because it's the only form of clean electricity that can meet all the demanding requirements of this century.

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Alternatives to eBay for the eco set

New online marketplaces offer home biodiesel processors to reclaimed lumber

PLENTY — Last year when green architect Brad Hardin began designing a Kansas City middle school to be built with reused building materials, he found himself spending as much time digging through salvage yards as he did designing the school. The painstaking experience led Hardin to start an online eBay-style marketplace to help buyers and sellers of reclaimed building materials find each other. | VISIT PLANET REUSE

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Is Earth Day the new Christmas?

As more marketers pile on, consumerism may eclipse the spirit of the event

ADVERTISING AGE — Marketers of all stripes are bombarding consumers with green promotions and products designed to get them to buy more products — some eco-friendly, some not so much. This year, it seems that just about everyone has found a way to attach themselves to what is fast becoming a marketing holiday that barely resembles the grass-roots event founded in 1970.

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