LOS ANGELES, CA - OCTOBER 10: Actor Mark Ruffalo arrives at the Premiere Of Disney And Marvel's "Thor: Ragnarok" - Arrivals on October 10, 2017 in Los Angeles, California.
LOS ANGELES, CA - OCTOBER 10: Actor Mark Ruffalo arrives at the Premiere Of Disney And Marvel's "Thor: Ragnarok" - Arrivals on October 10, 2017 in Los Angeles, California. Frazer Harrison Getty Images
LOS ANGELES, CA - OCTOBER 10: Actor Mark Ruffalo arrives at the Premiere Of Disney And Marvel's "Thor: Ragnarok" - Arrivals on October 10, 2017 in Los Angeles, California. Frazer Harrison Getty Images

‘Thor’ star Mark Ruffalo is trying to save the world, one cause at a time

October 12, 2017 12:48 PM