A simple gadget nudges people to save energy in the shower
People tend to shower more efficiently if they see real-time data about their energy usage as they scrub. Verena Tiefenbeck at the Swiss Federal Institute of Technology in Zurich and her colleagues equipped rooms at six hotels with a shower meter. Sixty per cent of the meters displayed real-time information about water and energy consumption, along with an animation of a polar bear on a melting ice floe. The remaining 40% of the meters displayed only the water temperature.
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