By Todd Ackerman, Houston Chronicle May 15--Houston energy magnate Dan Duncan is giving the University of Texas M.D. Anderson Cancer Center $35 million to boost efforts to prevent cancer, a new battlefront in the war against the deadly disease.

By VALARIE POTELL, ARIZONA DAILY STAR Dan Duncan works all day and helps fight AIDS at night - or at least his computer does.

By Valarie Potell, The Arizona Daily Star, Tucson Feb. 6--Dan Duncan works all day and helps fight AIDS at night -- or at least his computer does.

By Purva Patel, Houston Chronicle Sep. 23--One's an owner of a professional basketball team who got on the list with the help of investments. Another got there with a boost from the energy sector. And the third makes much of his money distributing Toyotas.