Jack Black explores how Miami and other low-lying coastal areas can survive rising seas. Although the political and business community is largely in denial, he finds a few legislators, residents, activists and scientists racing to solve the problem before disaster strikes. Ian Somerhalder travels to the Bahamas where he dives with scientists from Woods Hole Oceanographic Institute to learn about potential superstorms

In Africa, Thomas Friedman finds an increasing population of refugees fleeing wars, rising sea-levels and hurricanes. Don Cheadleexplores how governor Jerry Brown is fighting the historic California drought while also fighting climate change. A Central Valley scientist shows Cheadle the danger of a global water and food crisis.

Ty Burrell looks into the progress of electric vehicles (EVs) and automated vehicles, from Silicon Valley's technology innovators to Atlanta, Georgia, where generous EV incentives were recently killed. Arnold Schwarzenegger explores how the military is adapting to climate change by increasing energy efficiency and using renewables. In Kuwait, he sees how fuel convoy's are responsible for most US soldier deaths.