By: Mark Leon Goldberg on July 27, 2007 Secretary General Ban ki Moon visited San Francisco yesterday to pay homage to the city that gave birth to the United Nations and also see, first-hand, some of California’s cutting edge efforts to fight global warming. But before Ban meets with Governor Schwarzenegger later today, he had a personal stop to make. From the San Francisco Chronicle: …as soon as his airplane lands at San Francisco International Airport, Ban’s first order of business will be to visit Libba Patterson, 90, of Novato, whose family hosted him on his first visit to the United States more than four decades ago. “San Francisco is a place close to my heart,” Ban told reporters at a news conference at U.N. headquarters in New York last week. “I was a young foreign exchange student in the Bay Area a long, long time ago in 1962. The kind lady who opened her home to me lives just across the (Golden Gate) bridge. I cannot wait to see her.” Later today, Ban and Gov. Schwarzenegger will tour a Silicon Valley firm that has pioneered technology to make homes and businesses more energy efficient.