Here's one for your "only in California" file: A judge has ordered a Sunnyvale couple to cut down two of the eight redwood trees on their property because they block sunlight access to their neighbor's solar panels.

About six years ago, Mark Vargas complained that eight redwood trees on Richard Treanor's and Carolyn Bissett's property were blocking sunlight to the $70,000 worth of solar panels he built to power his house in 2001. To protect his investment, Vargas cited the obscure Solar Shade Control Act that requires homeowners to keep their trees from shading more than 10 percent of a neighbor's solar panels between 10am and 2pm, peak hours for collecting sunlight. The judge ruled in favor of Vargas, although he decided against fining Treanor and Bissett the up to $1,000 a day in violations allowed by the law.

If solar power and recycled building materials just aren’t green enough for you, the brains behind the Fab Tree Hab might have the perfect pad. Architects Mitchell Joachim and Javier Arbona, along with environmental engineer Lara Greden, have designed a house that will grow from a few seedlings into a two-story, water-recycling, energy-efficient abode. The Fab Tree Hab,
a mix of ancient and ultramodern technology, isn’t
merely environmentally friendly.