My grandmother is a Holocaust survivor. Some heroes of mine have long been the Jewish Partisans, these young people who just went into the woods with whatever guns and bombs and what not they could get their hands on, and just would fight Nazis, and try to help people escape.

I used to be a lot more afraid of climate change. Now I spend my time working, planning, trying to move forward.

It is rarely comfortable to talk about climate change. Bringing something difficult up, it feels like somehow by mentioning this I'm kind of causing it, I'm hurting these people. But you're not hurting these people; climate change is hurting these people. You're telling them they're being hurt.

I think it's very important to invite and encourage people to talk about climate change who have a lay understanding. In general, there is a lot of confusion among climate activists about the role of science, that scientists should be social and political leaders of this movement.

While the American people have the impression that scientists are hard at work figuring out this complex matter of climate change, it's not actually that complicated.

By looking the other way on climate change we facilitate a collective denial, and we do it for each other.

Climate change has been associated so much with a peaceful mentality - obviously peace and love are good, but we need to think about climate as a threat to survival.