Trickle down economics

SEATTLE (AP) -- Microsoft co-founder Paul Allen said Thursday that the majority of his wealth will go to philanthropy after his death.

The Seattle billionaire says that has been his plan for years.

A spokesman for the Paul G. Allen Family Foundation, Aaron Blank, said the announcement was a response to last month's challenge from Bill Gates and Warren Buffett, who asked other billionaires to pledge at least half their wealth to charity. This is the first time Allen has publicly announced his intentions, Blank said.