Astronomers fear that emissions from a proposed hydrogen plant 6 miles away will impede work at the Paranal Observatory in Chile. File Photo by Mario Ruiz/EPA Oct. 2 (UPI) -- The Paranal Observatory, one of the world's most important for astronomers, faces a major risk of providing clear images because of a proposed green hydrogen and ammonia plant planned just over 6 miles away. Owned by U.S.-based...