27 September sees the California Academy of Sciences opening its new building in San Francisco's Golden Gate Park - a spectacular and ecologically through-designed edifice by Italian star architect Renzo Piano which even uses discarded jeans for insulation.
The building is topped by the largest green roof in the USA. Piano has designed a living roof with a total of 1.7 million native plants over an area of more than 18,000 square metres. Mosaics of wildflowers blanket the vast roof landscape, and any water not absorbed by the plants is captured and stored in holding tanks for irrigating the roof as well as for use in the building's toilets.
Cooper Scollan and his team from the Rana Creek nursery have planted a carefully devised mix of flowering plants and herbs, from the orange-bloomed Californian poppy all the way to the self heal, a rare Northern Californian coastal flower. It is hoped that its purple blossoms will attract such insects as the threatened Bay checkerspot butterfly.
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Get the full story by Mark de la Viña in the San Francisco edition of MINIInternational.