Environment
SolarOr uses sunlight to generate electricity for a building. Image via Shutterstock.com (shutterstock high rise)
Energy

Greener heating for hotels and hospitals

An Israeli hybrid water-heating system shaves thousands of dollars a year off heating costs at big facilities, and vastly improves efficiency. The Hydra system being installed at the Jerusalem Ramada. Heat pumps, more common in moderate climates than extreme ones, …

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