Episode 8: Dead Zone

Whenever farmers inject artificial fertilizer into their cropland where I live, almost all of it will end up in the Missouri River Watershed. It will be carried to the Mississippi River, and down to the Gulf of Mexico. All this fertilizer has created a dead zone the size of Delaware. And the worst part is that we don't even need artificial fertilizer. We only need it because we've decided cows like grains more than they like grass.