Paul Allen and Bill Gates founded Microsoft
and now Allen is taking a page out of Gates's book, announcing that he will give more than half of his estimated $13.5 billion fortune
. Just last month we learned about a plan
that Gates, his wife, Melinda and Warren Buffett had cooked up to get the country's billionaires
to earmark half their fortunes to charitable causes. Other billionaires who have already committed to at least a 50 percent pledge include Eli and Edy Broad, John and Ann Doerr, H.F. "Gerry" and Marguerite Lenfest and John and Tashia Morgridge.
Allen already has an existing foundation, the Paul G. Allen Family Foundation
. His projects have included the nonprofit scientific research done at the Allen Institute for Brain Science, the Allen institute and the Experience Music
Project/Science Fiction Museum. As the NY Times reports Allen has made Chronicle of Philanthropy's annual list of the nation's 50 largest donors, eight times. Last year, he ranked No. 11 for giving
away $85 million.