The world’s first commercial passenger ferry powered by 100% hydrogen fuel, the MV Sea Change, was launched on Friday at the San Francisco Ferry Building. The 70-foot catamaran can transport up to 75 passengers along the waterfront between Pier 41 and the downtown San Francisco ferry terminal starting July 19. Unlike current diesel-powered ferries that emit pollutants, the hydrogen-powered Sea Change produces only heat and water vapor as byproducts. Passengers can even drink the emissions from an onboard water fountain. The service will be free for six months as part…