Billionaire buddies Warren Buffett and Bill Gates held court at a Q&A hosted at Columbia Business School Friday. "I've had fun in my 20s, my 30s, now I'm 86, and I'm having fun," he said. Microsoft co-founder Gates, who invests heavily in philanthropic health care efforts, vowed to stand up against efforts to hinder vaccinations. One thing they're not fans of spending money on, however, is politics. The money is being saved for, not the megaphone, but the work of the foundation," Gates said, referring to the Bill and Melinda Gates Foundation.

Source: CNN January 27, 2017 23:48 UTC