Open this photo in gallery: U.S. Transportation Secretary Pete Buttigieg tours a construction site for a new pier that will accommodate larger ships coming from the U.S., in Tokyo, on June 19.Eugene Hoshiko/The Associated Press An American push to establish "green shipping corridors" is key to reducing carbon emissions from the shipping industry, U.S. Transportation Secretary Pete Buttigieg said Monday while touring the port of Yokohama near Tokyo. Buttigieg was in Japan to attend a meeting over the weekend of transport ministers of the Group of Seven advanced economies, who reaffirmed a commitment to reducing emissions from the transport industry…