Humans have made a huge hole in nature in the last 10,000 years. [With de-extinction,] we have the ability now, and maybe the moral obligation, to repair some of the damage.
Historians will consider this a dark age. Science historians can read Galileos technical correspondence from the 1590s but not Marvin Minskys from the 1960s.
[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.
Carbon tax has the advantage of basically being able to subsidize one set of activities that you want with another set of activities that you don't want. It's like a cigarette tax.