Livestock is responsible for a large fraction of grains (and therefore clean water) consumption, while emitting an equally large amount of CO2 and methane into

Livestock is responsible for a large fraction of grains (and therefore clean water) consumption, while emitting an equally large amount of CO2 and methane into atmosphere. So largely reducing animal intake would be of huge help. This large scale habit change don't require gov. aid, it can be tackled by for profit businesses and research institutions alike.