Alan Alda always strives to play someone different. He takes Marc through the many characters he's created, from Hawkeye to Uncle Pete, and explains how he challenges himself from role to role. Plus, Alan talks about why he created an academic organization that advances science communication. See acast.com/privacy for privacy and opt-out information. Sign up here for WTF+ to get the full show archives and weekly bonus material! https://plus.acast.com/s/wtf-with-marc-maron-podcast.