I agree. The current farming practices will have to be changed and you got to start somewhere. Crowdfunding is certainly a great way for small people to have a meaningful impact on the planet. But when I see how people throw their money at campaigns like solar roadways and self-refilling water bottles that suck moisture out of the air, it does make me wonder what could have been funded with that amount of money instead. (I'm not joking. Those are real things. If you're interested, I highly recommend watching the YouTube videos Thunderf00t and EEVblog made on those topics!)
I wish I had a realistic solution. There are promising experiments with growing algae to create fuel. Those algae could just as well be eaten by humans. They could be genetically modified to provide everything the human body needs, but I don't see earths population switching to an algae diet anytime soon...
Then there are of course insects which are already eaten in some parts of the world. They sound quite promising but they need to be fed with food that could have already been eaten by us in the first place. Probably the best solution, and the most controversial one, is restricting the amount of children people are allowed to have. I don't even want to go into the moral and social questions of that but fact is that the human race is the root of the problem and it could be an option to grab the problem by its roots before our environment grabs it by its roots and reduces the population in its own way.
RE: More about the Earth that is "just right" but likely to expire soon...