The founder and CEO of Colossal talks about the future of de-extinction, leaving his former company Hypergiant, discovering a lost civilization, and more.
Walter, Aaron and Gretchen Hilmers make up a creative family savannahnow.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from savannahnow.com Daily Mail and Mail on Sunday newspapers.