Gates: Buffett gift may help cure worst diseases.

NEW YORK - Warren Buffett?s contribution of about $1.5 billion a year to the Bill & Melinda Gates Foundation will be used to seek cures for the world?s worst diseases and improve American education, Bill Gates said Monday. ?There is no reason we can?t cure the top 20 diseases,? Gates said while appearing with Buffett during a donation ceremony at the New York Public Library.