HELENA, Montana (Reuters) - Montana's governor wants to solve America's rising energy costs using a technology discovered in Germany 80 years ago that converts coal into gasoline, diesel and aviation fuel. The Fischer-Tropsch technology, discovered by German researchers in 1923 and later used by the Nazis to convert coal into wartime fuels, was not economical as long as oil cost less than $30 a barrel. But with U.S. crude oil now hitting more than double that price, Gov. Brian Schweitzer's plan is getting more attention across the country and some analysts are taking him very seriously. Montana is "sitting on...