NBCUniversal Inc. August 23, 2019 9:28 am David Koch Dies at 79 David Koch, the billionaire conservative activist and philanthropist, has died at the age of 79. US & World Videos 2:28 King Charles returns to public duties amid cancer diagnosis 1:39 Benny Blanco talks falling in love with Selena Gomez 1:20 Kate Middleton and Prince William share never-before-seen pic on 13th wedding anniversary 2:30 Blue Ivy to make acting debut alongside mom Beyoncé in ‘Lion King' prequel ‘Mufasa' 3:48 Kate Hudson reveals her current relationship with estranged father Bill Hudson