Carrying on as usual carries enormous risks, condemning today's students to a world of constant insecurity and frequent catastrophes.

The real focus needs to be on political action to stop this runaway train, real soon.

Perhaps we should put up posters in such places reminding people that where they stand was underwater the last time that the Earth ran a 3°F fever.

It's going to be like herding stray cats, and the political leaders who can do it will be remembered as the same kind of geniuses who pulled off the American Revolution.

Our CO2 mixes with everyone else's within a year, then hangs around for centuries like a shroud.

You can always spot the pioneers by the arrows in their backs.

Climate change has a very high procrastination penalty that just grows with each passing year of inaction - rather like what happens if you don't pay off your credit card. But for climate, there is no such thing as a fresh start from bankruptcy.