Creating Facebook was a bold move, but CEO Mark Zuckerberg just proposed what he said is an even bolder one: Curing all the world's diseases.
"While helping to connect the world will always be the most important thing that I do, there are more global challenges that I also feel a responsibility to help solve, to create a better world for my daughter and all future generations," Zuckerberg told investors in a conference call Wednesday. "Things like helping to cure all disease by the end of the century."