Sept. 11 Conspiracy Theorist Offers $100,000 Prize By Larry Fine NEW YORK (Reuters) - Jimmy Walter has spent more than $3 million promoting a conspiracy theory the Sept. 11, 2001, attacks on the United States were "an inside job" and he is offering more cash to anyone who proves him wrong. The millionaire activist is so convinced of a government cover-up he is offering a $100,000 reward to any engineering student who can prove the World Trade Center buildings crashed the way the government says. "Of course, we expect no winners," Walter, 57, heir to an $11 million fortune from...