
Unlike Gates, whose recognition rating is the equal of a Tiger Woods or a Tom Cruise, this other guy could walk down the street untroubled by autograph hunters. He’s Paul Allen, and he’s worth a cool $US 21 billion ($28.6 billion).
Much of Paul Allen’s philanthropy has been dedicated to health and human services and toward the advancement of science and technology. Through the Foundation, Allen awards nearly $30 million in grants annually.
In 2004, Paul Allen confirmed that he was the sole investor behind Burt Rutan’s Scaled Composites’ SpaceShipOne suborbital commercial spacecraft. SpaceShipOne was the first privately-funded effort to successfully put a civilian in suborbital space and winner of the Ansari X Prize competition.