The extinction of various species has led to a segregation of human activity and natural activity, says Stewart Brand of The Long Now Foundation, which focuses on long-term strategies for the next 10,000 years. The organization develops biotechnology to allow humans to better co-exist with nature. In this interview filmed at the 2016 Aspen Ideas Festival, Brand discusses how biotechnology can be used to bring back the passenger pigeon from extinction and mitigate climate change at last.