And he's also very critical about the "other side of the coin" : "business as usual, mankind to the stars" predictions. He's IMHO a bit too complacent about so

And he's also very critical about the "other side of the coin" : "business as usual, mankind to the stars" predictions. He's IMHO a bit too complacent about some of the now possible worst case scenarios : yes, the end of the current Ice Age (that Homo has evolved in) likely won't be the end of mankind, but when thinking about the Earth returning into a more normal state, you have to remember that it also involved periods where most of it was too hot for mammals to inhabit, that the Sun is slightly hotter now, and that a potential future Arctic & Antarctic jungles civilization will still kind of suck because it still involves months-long nights and days.