Today we're dumping 70 million tons of global-warming pollution into the environment, and tomorrow we will dump more, and there is no effective worldwide response. Until we start sharply reducing global-warming pollution, I will feel that I have failed.

Incredibly, while these 18 to 20 year-olds cannot legally buy a beer, cannot purchase a bottle of wine and cannot order a drink in a bar, right now they can walk into any gun shop, any pawn shop, any gun show, anywhere in America and buy a handgun.

Science is warning us that if we do not quickly reduce the global warming pollution that is trapping so much of the heat our planet normally radiates back out of the atmosphere, we are in danger of creating a permanent 'carbon summer'.

I would kiss Tipper much longer.

The wind and the sun are free.

We are close to a time when all of humankind will envision a global agenda that encompasses a kind of Global Marshall Plan to address the causes of poverty and suffering and environmental destruction all over the earth.

The moral imperative to make big changes is inescapable...that what we take for granted may not be here for our children