If you include all the externalities, fossils fuels are the most expensive, not the least expensive, of the alternatives we have today.

> Drastic action on the climate will almost certainly make most people's lives harder

The human body cools itself by evaporation of sweat. This mechanism stops working at 95 degrees F at 100% humidity, or at 115 degrees with 50% humidity. Last summer in southern Indiana, where I live, we have a week of over 100 degrees/50% humidity.

Recall, if you have a temperature of 103 degrees, they recommend you see a doctor immediately. Over 108 degrees and you risk brain damage.

And currently the world is warming at the rate of just over 1/3 of a degree per decade. Drastic action? The most drastic thing we could be doing is nothing.

Solar is already cheaper than coal, and the price of solar panels is following a Moore's law like curve. Wind farms aren't far behind, and they've already saved Texas's bacon a couple of times.

It doesn't matter how many social media sites they shut down, kids are going to be depressed because nobody seems to take the problems their generation are going to face seriously.