Especially in recent years, the more and more we understand what we are doing, the more we have the science to tell us what we're doing, the fact that we continue to do it without taking steps to address it strikes me as, among many other things, irreverent in an extreme.

One degree turns out to be enough to really unhinge all sorts of earth's ecosystems.

There's no huge mystery. If you dig up huge amounts of carbon, huge amounts of ancient biology, hundreds of millions of year's worth of ancient biology, and flush it into the atmosphere in a matter of decades, then it stands to reason that we're going to have enormous effects, and now we can see those effects all around us.

Environmentalism, I'd always been told, was just rich white people.

We don't know exactly where all the tipping points are in the physical world for inescapable damage, but we're clearly reaching close to some of them.

I think that it is impossible to think of a threat to social justice greater than what we are doing to the earth's atmosphere at the moment.

If Apple is enslaving Chinese to make its iPhones, you don't need to eat the i-Phone, you need to make sure that Apple is paying a living wage to someone, and then it adds a dollar to the cost of iphones, and everybody's cool.