My 2p on all of this
To address some of the points made:
- stuff on standby. Yes it may save some power but I then have to switch it on physically at the device or the wall. May as well ask why people don't throw away their remotes and manually change channels?
-Driving. We need legislation on emissions. if the EU made it illegal to sell a new car that pollutes more than X g/km of CO2 then manufacturers would pretty soon make more efficient cars. This is certainly possible:
BMW 530i - 3L 6cy petrol - 182g/km CO2 - 0-62 6.3s 36.7mpg
BMW 535d - 3L 6cy diesel - 178g/km CO2 - 0-62 6.4s 42.2 mpg
Almost identical performance but 16% more efficient for the diesel. Oh and £5k more expensive to buy though.
-Renewables. OK, IIRC energy cannot be created or destroyed, merely transferred from one form to another. So if you take energy out of the wind, slow the streams, intercept sunlight before it warms the earth etc. then what is the long term impact? I don't know, but I am as sure as sure that if turning your TV off standby is significant then taking energy out of the environment must be also.
-Cost. I pay a premium for energy. I pay large amounts of taxes and duties which I am constantly told are to be used to offset the impact of the environmental effects of the fuels I use. I like to be warm, so I have central heating. I like holidays so I fly occasionally. I like to visit my poor, housebound silver haired grandmother who lives 60 miles away from me and I drive there. In short I pay the piper so I call the tune. What the piper does with the money afterwards is not my problem. It might be my grandkids, but I am sure they will turn out to be smarter than me...
I am reminded of one of the best quotes of all time:
"War, war never changes. The end of the world occurred pretty much as we had predicted: Too many humans, not enough space or resources to go around. The details are trivial and pointless, the reasons, as always, purely human ones."