What is a "net-zero" building? And what makes San Francisco's Exploratorium the world's largest "net-zero" museum? Design expert, Peter Rumsey explains the key green building components:
Over 70,000 gallons of Bay Area water is circulated around the building every hour for heating and cooling
5,874 high-efficiency solar panels on the Exploratorium roof will offset 33,150 tons of carbon dioxide emissions over the 30-year life of the system
16 percent of the water collected from roof runoff will be reused for toilet flushing
Max use of natural light using high-performance glass to reduce heat gain and heat loss
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