Climate News Network: Researchers in the US have identified a way in which city-dwellers are inadvertently stoking up the heat of the night by installing air conditioners.
Because the cities are getting hotter as the climate changes, residents are increasingly investing in aircon systems - which discharge heat from offices and apartment blocks straight into the city air. And the vicious circle effect is that cities get still warmer, making air conditioning all the more attractive to residents.
According to scientists...