The answer is to end our reliance on carbon-based fuels... If we succeed, we create booming new industries, wealth, clean secure energy and maybe we prevent the greatest disaster so far in human history, saving millions of lives while improving billions more. If we fail, basically it's business as usual while things slowly get worse all around us.

Pollution should never be the price of prosperity.

Adopting a central organizing principle means embarking on an all-out effort to use every policy and program, every law and institution, to halt the destruction of the environment.

Take it from me: Elections matter.

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.

Civil disobedience has an honourable history, and when the urgency and moral clarity cross a certain threshold, then I think that civil disobedience is quite understandable, and it has a role to play.

The scientific evidence of how serious this climate crisis is becoming continues to amass week after week after week.