He was right about fixing security on airlines too back in 1999, but the Republicans allied with the airlines to reject reinforced cockpit doors, and Israel style airline security. They said it would hurt profits. He has been right about climate change too, many of the changes he predicted are happening.
The downsizing of government was his work during the Clinton years. He pared it back to the size of the Eisenhower administration.
Gore is very good at research, and that was why he was a good veep. If Clinton wanted to know if an initiative would work, he asked Gore to research the plan.
Yep, nobody likes a smarty pants.
Gore's money comes from his government pension, investments, and sitting on the board of directors of several companies like Google and Apple. He was the force behind Apple going green. All money from his climate books, movies, and speeches is funnelled into helping clean energy startups and different charities. When he travels, he buys carbon offsets.