Colonialism of one kind or another, imperialism of one kind or another, and slavery, and on and on and on.

There are so many symptoms of this disease it's hard to know where to start to catalogue them, but just look at the effects on hydrology - on the way water moves around the planet.

The essential thing we need to understand is that the climate crisis is not some future threat, but a very present peril, the biggest one humans have ever encountered. Until we understand that, we'll dawdle.

There's a part of all of us whose impulse is to say, "Let's keep everything the same until I die and then you can do whatever you want afterward." And that's a difficult part.

Alone among businesses, the fossil-fuel industry is allowed to dump its main waste, carbon dioxide, for free.

In the last two years 24 countries have set new all-time temperature records. We've seen flooding on an epic scale in every continent .

What we're talking about is the endless, gullible elevation of necessary levels of comfort and status and everything else at the complete expense of all around us. It's going to take us a long time to learn how to climb down a little bit from the heights on which we have put ourselves.