[Kids] will grow up into a world that's difficult and wonderful, and they'll make the best of it they can, and hopefully help turn it in the best possible direction.

We're clearly not going to stop global warming at this point. We've already raised the temperature of the planet one degree. We've got another degree in the pipeline from carbon we've already emitted. What we're talking about now is whether we're going to have a difficult, difficult century, or an impossible one.

The idea that China and India will just abandon climate action is not true, because they're doing it for more reasons than we are.

Everything that the administration has done has been counterproductive.

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

My goal was to have as many of the primary sources as I could made available for people to look at and understand. Climate change is probably the most important thing that's ever happened, and yet people's understanding of it and its history remains a little fuzzy.

In reality, climate change is actually the biggest thing thats going on every single day.