You probably know facts don't matter. My guess is whoever did this study, cherry picked only what shows urban gardens are worse than production farms. The idea is to eliminate us from being sovereign, so all they need to do is find some way to explain why they need to make home gardens illegal. Sure, they don't look at everything. The whole exercise is meaningless since global warming is made up. It doesn't exist. Any study is going to make their point, so the studies are also flawed. Even if it were true, it wouldn't matter. We have a right to grow our own food. Period.