We’ll also experience the return of the shutter: It’s the best way to keep heat out of a house.Along with a hotter climate, we’ll also experience water shortages. The daily water consumption per person in Britain today runs an average of 160 liters. The government expects us to get down to 80 liters — the contents of just one deep bath — by the end of the decade. The simple earth or midden toilet has already been revived in the form of the ecologically sound composting loo.