Around the globe, scientists are racing to solve a series of mysteries. Crumbling houses in New Orleans are linked to voracious creatures from southern China. Vanishing forests in Yellowstone National Park are linked to the disappearance of wolves. An asthma epidemic in the Caribbean is linked to dust storms in Africa. Scientists suspect that we have entered a time of global change swifter than any human being has ever witnessed. Where are we headed? What can we do to alter this course of events?

National Geographic's Strange Days on Planet Earth explores these questions. Drawing on research being generated by a new discipline, earth system science (ESS), the series aims to create an innovative type of environmental awareness. By revealing the cause-and-effect relationship between what we as humans do to the earth and what that, in turn, does to our environment and ecosystems, the series creates a new sense of environmental urgency. Award-winning actor, writer, and director Edward Norton hosts. Includes all four episodes from the series: Invaders, The One-Degree Factor, Predators and Troubled Waters.