CO2 is the exhaling breath of our civilization, literally... Changing that pattern requires a scope, a scale, a speed of change that is beyond what we have done in the past.

George Orwell once wrote that a false belief sooner or later collides with physical reality, usually on a battlefield.

Tobacco addiction sinks its claws in deeply, it's just as powerful of [sic] an addiction as heroin or crack cocaine.

The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed.... But we should not wait, we cannot wait, we must not wait.

It's an important point, and every little bit helps not least because those who make those kinds of changes are more likely to make their voices heard as citizens. But the ultimate solutions are going to come through policies.

Every nation has a moral obligation to safeguard the future.

What changed in the United States with Hurricane Katrina was a feeling that we have entered a period of consequences.