We sometimes emphasize the danger in a crisis without focusing on the opportunities that are there.

I am Al Gore, and I used to be the next president of the United States of America.

The science linking the increased frequency and severity of extreme weather to the climate crisis has matured tremendously in the last couple of years.

Junkies find veins in their toes when the veins in their arms collapse. Developing tars sands is the equivalent.

For a free country to continue thriving, there have to be regular reforms, because any society, any economy that stays in place, you're going to see repeated attempts to exploit the openings for twisting policy to the advantage of those who already have wealth and power.

Unless we stop dumping 70 million tons of global warming pollution into the atmosphere every 24 hours, which we are doing right now ... the continued acceleration of this pollution would destroy the future of human civilization.

You can say the Earth is flat, but it doesn't mean you're going to fall off the edge.