We are destroying the world at a very rapid rate, and an awful lot of people are just giving up hope and thinking, "Well, there's nothing I can do." The rain forests are disappearing everywhere. Big dams are draining whole countries of their water supply: The famous Serengeti, in Tanzania, is threatened by a dam in Kenya; and the Nile is being threatened by a huge dam in Ethiopia. There's mining, there's fracking, there's drilling for oil. We're in the middle of the sixth great species extinction; we're losing biodiversity in place after place. We're burning fossil fuels very, very fast.

We are breeding billions of animals to eat them, and that means that whole habitats are being destroyed to grow grain, masses of fossil fuel are being used to take the grain to the animals, the animals to slaughter, the meat to the table. In addition, the animals are producing masses of methane gas with their digestion, and that's a very virulent greenhouse gas.

Not only is the ice in the Arctic and Antarctic melting, but, very frighteningly, the permafrost is, too, releasing even more methane. This plus carbon dioxide, and a couple of other gasses, are blanketing the earth and trapping the heat of the sun. And that's led to climate change with terrible hurricanes and flooding and droughts.