Showtime is offering a sneak peek of new docuseries "Years of Living Dangerously" across multiple platforms, including YouTube, MVPD’s free VOD channels and the net’s website. The climate change series premieres Sun at 10pm. — Syfy debuts "Z Nation," a 13-ep zombie series, in the fall. Separately, the net booked new mythological drama series "Olympus." The 13-part series of 1-hour eps will premiere in 2015. — A&E picked up a 3rd season of "Bates Motel." Season 3 of the series will start production this fall on 10 eps.