The center of the earth is about a million degrees.

In an economic recession, naturally, when you ask people to list their priorities, they're going to place a higher priority on the immediate economic situation.

Having worked on climate crisis for almost 40 years now, I've seen good days and bad days. And through all of that time, the general trajectory has been it's getting worse, it's getting worse. But in the last ten to 20 years, there's a second development; the solutions are more and more, and more available. So having this broad overview that I've developed over a long period of time, I now see the evidence that the solutions are available. We're gonna do this.

The Himalayan Glaciers on the Tibetan Plateau have been among the most affected by global warming. The Himalayas...provide more than half of the drinking water for 40% of the world's population...Within the next half-century, that 40% of the world's people may well face a very serious drinking water shortage, unless the world acts boldly and quickly to mitigate global warming.

The truth is that climate change is presenting the greatest challenge humanity has ever faced.

A president who breaks the law is a threat to the very structure of our government.

The sooner we switch away from carbon-based fuel and start relying on renewable energy sources available in the United States, the sooner we will grow our economy by creating the millions of new jobs that will come from retrofitting homes and businesses, building smart grids, renewable energy systems and planting trees and all the rest. We need to create a lot of jobs that can't be outsourced.