One advantage of a solar collector in space: It would be some kind of origami thing that would unfold and be relatively light because it doesn't have gravity to deal with.

Do what's good for humans, modeled on how humans already do things; ignore what's convenient for computers.

If all of your electricity in your lifetime came from nuclear [energy], the waste from that lifetime of electricity would go in a Coke can.

The main problem with solar on the Earth's surface is that it is so intermittent, and we don't have decent storage yet.

In our researches on the likely economic apocalypse it's become clear what is the prime survival tool for hard times: friends. Good friends. Lots of them.

A library doesn't need windows. A library is a window.

[Wind energy] takes a very large footprint on the land, five to 10 times what you'd use for nuclear, and typically to get one gigawatt of electricity is on the order of 250 square miles of wind farm.