Indoor farming isn't scalable. At least not with the models that are being done now. They work for niche crops, but not staple carb sources like potatoes and grains. They can be profitable, but aren't a catch all solution.

The ocean cleaning projects also don't scale. We should be focused on keeping the trash from getting into it first by switching to recyclable and biodegradable packaging and forcing the fishing industry to switch back to hemp nets.