I found Gaia interesting, and if not entirely in line with what I believe, still plausible; it’s obvious that the Earth’s ecosystems are governed by systems of feedback, and that sometimes that has had a stabilising effect — and that life continues to find a way to survive. From this book, it seems like Lovelock believes the ‘rough ride’ is mostly for humanity, ignoring the fact that we’ve severely thrown off natural systems, and that we’re not innocent in this. We’ve known we’re doing it for quite some time, and yet he sort of shrugs it off and says there’s no use feeling guilty. Well, guilt won’t fix the climate, but a sense of responsibility might help.
He’s right that humans have to change and adapt to the changing climate, but I’m not so sanguine that’s going to be enough for life to go on. I’m pretty sure bacteria and archaea will get along fine, but we’re decimating the ranks of amphibians, big mammals, sea creatures, etc. And he’s not always up on modern science: he still seems to believe, here, that the atmosphere can’t be more than about 25% oxygen without causing regular devastating fires. He’s wrong: we know the oxygen saturation has been much higher, and life went on — that’s why there were gigantic dragonflies; they couldn’t have survived in a lower-oxygen atmosphere.
While the Gaia theory has been influential, I think perhaps Lovelock should sit down and stop profiting by it. This book is rather rambling, at times even confused.