Want something not hideously depressing? This documentary about Indigenous teens paddling the Klamath River for the first time after dam removal is beautiful! https://www.youtube.com/watch?v=4FuGuWeAra4
For people who are inspired but want to do some small thing themselves, check out the amazing successes of
'regenerative' land projects,
aiding carbon sinking and everything else, from any scale, a back-yard, or entire watershed. There are so many videos on methods, but I selected a Ted Talk by Brad Lancaster; author of "Rainwater Harvesting for Drylands and Beyond". Both links go to the same video.
https://yewtu.be/watch?v=I2xDZlpInik