" This has been a book about people trying to solve problems created by people trying to solve problems. In the course of reporting it, I spoke to engineers and genetic engineers, biologists and microbiologists, atmospheric scientists and atmospheric entrepreneurs. Without exception, they were enthusiastic about their work. But, as a rule, this enthusiasm was tempered by doubt. The electric fish barriers, the concrete crevasse, the fake cavern, the synthetic clouds- these were presented to me less in a spirit of techno-optimism than what might be called techno-fatalism. They weren't improvements on the originals; they were the best that anyone could come up with, given the circumstances...

It's in this context that interventions like assisted evolution and gene drives and digging millions of trenches to bury billions of trees have to be assessed. Geoengineering may be 'entirely crazy and quite disconcerting', but if it could slow the melting of the Greenland ice sheet, or take some of 'the pain and suffering away', or help prevent no-longer-fully-natural ecosystems from collapsing, doesn't it have to be considered? "

― Elizabeth Kolbert , Under a White Sky: The Nature of the Future