The urgency derives from the nearness of climate tipping points.

The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.

The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it.

The five warmest years over the last century occurred in the last eight years.

We're handing them [young people & future generations] a climate system which is potentially out of their control. We're in an emergency: you can see what's on the horizon over the next few decades with the effects it will have on ecosystems, sea level and species extinction

What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.