Question 4

Technology is one of the things that got us into this environmental mess in the first place, and I think we'd have to effectively harness it to eventually fix the environment. I don't really see people giving up most of their newfangled stuff for any reason , so the best way to become green is to slowly replace these with environmentally friendly technology. For example, since people probably aren't going to suddenly give up their cars for recyclable soy rickshaws or horses or whatever, the best thing we can do is develop much more environmentally-friendly cars and make things like the Prius cooler and trendier so that more people will buy it. They could put a Prius in the next Transformers movie, have Batman drive a hybrid batmobile and have James Bond fly economy in his next movie.
Also, I think that eventually, technology will be so far out and sci-fi that we can live in dome cities that protect us from harsh environments or live in space colonies or whatever. Maybe one day, it will be what will save us after all. But at this point, technology is not going to go away, so the best thing we can do is minimize its impact on the environment.