From wherever the emissions come, they have the same effect: They trap much more heat from the sun, melt the ice, raise the sea level, cause stronger storms, floods, drought, bigger fires, generate millions of climate refugees, destabilize political systems, threaten the growing of food crops and cause a number of other catastrophic consequences which, taken together, threaten the basis for the future of human civilization on the Earth.

The moral imperative to make big changes is inescapable...that what we take for granted may not be here for our children

Global warming pollution, indeed all pollution, is now described by economists as an “externality.” This absurd label means, in essence: we don’t to keep track of this stuff so let’s pretend it doesn’t exist.

When people flirt with despair about the future, they are less likely to take the actions necessary to safeguard it, focusing instead on the short-term.

Consider what kind of car you get. Buy cars and other products that have the least impact environmentally.

And nobody is talking about taking guns away from hunters or sportsmen or banning all guns. Nobody is talking about that.

I understand that being optimistic in this age is challenging, but I am optimistic nonetheless.