Part 1 examines some of the high profile natural disasters of the past few years, and questions how much of a part humans had to play in them. Attenborough also discusses various other lower profile environmental changes too, and what kind of impact they’re having.

Part 2 is taken up by looking ahead, to what the long-term impact on the planet is likely to be, and things we can do to make sure those worse case scenarios simply don’t come true. Given the strengths of the arguments made before the documentary arrives at this segment, it’s not something you’ll want to ignore.