Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions.

The question is not whether to close the parks, but how to accomplish this goal.

Only in the last few years did the science crystallize, revealing the urgency - our planet really is in peril. If we do not change course soon, we will hand our children a situation that is out of their control.

Global warming isn't a prediction. It is happening.

The democratic process is supposed to be one person one vote, but it turns out that money is talking louder than the votes.

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

The climate is nearing tipping points. Changes are beginning to appear and there is a potential for explosive changes, effects that would be irreversible, if we do not rapidly slow fossil-fuel emissions over the next few decades.