GREEN
05/12/2010 05:12 am ET Updated May 25, 2011

Mitch Kapor's 'Green' Mansion: An Oxymoron?

Mr. Kapor wants to build a 10,000-square-foot house, complete with a 10-car garage, in Berkeley, Calif.

When the house won planning approval earlier this year, many neighbors were surprised -- not so much by the size of the house, or by its sleek design, but by the fact that, under Berkeley regulations, the house will qualify as "green."

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