This article focuses specifically on the warming and the depletion of oxygen in our rivers. I watched the video, but I didn't read the text. I think it is just a transcript from the video.
The best way to save any part of our environment is to get more people to engage with it. Whether that is fishing on a river, hiking through the woods, or any other outdoor activity. These activities have routinely been proven clinically to improve a person's health and well-being. If we can get more people participating in this positive feedback loop, we will have more interest and political will to protect our environment.
It's only mentioned that warming in general is causing the lack of oxygen in the rivers. Well, what is causing the warming? They mentioned sedimentation, but they don't connect that more large rain events lead to more sedimentation, more sediment in the rivers absorbs more sunlight and holds heat. They mentioned removing old dams to make the water run faster which will keep it cooler. That's a great thing to do, but we really need to focus on increasing the buffer zones between rivers and development and showing up the banks along our rivers.