It is hard to find something that we actually got right in the modern bathroom. The toilet is too high (our bodies were designed to squat), the sink is too low and almost useless; the shower is a deathtrap (an American dies every day from bath or shower accidents). We fill this tiny, inadequately ventilated room with toxic chemicals ranging from nail polish to tile cleaners. We flush the toilet and send bacteria into the air, with our toothbrush in a cup a few feet away. We take millions of gallons of fresh water and contaminate it with toxic chemicals, human waste, antibiotics and birth control hormones in quantities large enough to change the gender of fish.