If 100,000 people stop driving/flying any more than they have to; if they make sure their walls, windows and ceilings are well-insulated against cold and heat,

If 100,000 people stop driving/flying any more than they have to; if they make sure their walls, windows and ceilings are well-insulated against cold and heat, that's not a tragedy but a great start ... a victory ... which benefits them and 'the environment' we're an inextricable part of. Yes, each of those 100,000 is an individual, but their collective action is the opposite of inconsequential. Mankind thrived for hundreds of thousands of years without the 'intensive energy' he's been talked into shooting into his veins.