Helping the planet is such a big topic, I am going to make it real small right now by writing about this little invention. A “fish cannon” shows many wins. Simply: The fish that needed to get upstream are given a man-made device to do it, and humans get regular work assisting.
It is the job of the human race globally to help care for animals on planet Earth. In this example humans are overseeing, attending to a species that is also used as food. Food is important, isn’t it? And developing “live food” that is healthy helps us all… and it actually helps the waters it grows in too. So many wins!
Here is one system I am familiar with. Visited a future site when I was a youth and talked about it with other youths and adults. I didn’t realize how far it had come until today. Showing a video about it.