Facebook's Mark Zuckerberg and Priscilla Chan Expecting Baby Girl No. 3
File photo: Mark Zuckerberg and Priscilla Chan attend the 7th Annual Breakthrough Prize Ceremony at NASA Ames Research Center on November 4, 2018 in Mountain View, California.
File photo: Mark Zuckerberg and Priscilla Chan attend the 7th Annual Breakthrough Prize Ceremony at NASA Ames Research Center on November 4, 2018 in Mountain View, California.