Facebook co-founder Mark Zuckerberg and his wife on Wednesday pledged $3 billion over the coming decade on a drive to prevent, cure, or manage every disease in their daughter's lifetime.

"This is a big goal," Zuckerberg said at a San Francisco event announcing the next goal of the Chan Zuckerberg Initiative established by the couple. "But we spent the last few years speaking with experts who think it is possible, so we dug in."