As a government employee, you can't testify against the government.

How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more than one degree... We don't have much time left.

CEOs of fossil energy companies know what they are doing and are aware of long-term consequences of continued business as usual. In my opinion, these CEOs should be tried for high crimes against humanity and nature.

Jail threats did not dissuade Martin Luther King - and intergenerational justice is a moral issue of comparable magnitude to civil rights.

The climate system is being pushed hard enough that change will become obvious to the man in the street in the next decade.

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

Adding CO2 to the air is like throwing another blanket on the bed.