Ya know Will, you can be really depressing at times.
The bizarre thing is I'm actually an optimist, I just don't get bothered by all the stuff I know.
It was very useful when I did counter-terrorism - a lot of people get ultra cynical after that.
Look, everyone tries to freak you out. The engineer part of me always hears them say "choose A or B" and I choose to realize there are mixtures of choices between A and B and besides A and B, some of which are "better" and some of which are "worse" and that choosing something other than A "bad" is probably better than not choosing B "good".
If 1000 people in cities who drive very little and have little environmental impact due to energy etc change a lot, it may be less than 10 people in rural areas changing a small amount. Just alter time of day for watering, use less water dependent crops (rice etc), and you'll be right as rain. Pay attention to native crops and plants and animals and shift towards those and away from non-native ones.