The residential, commercial and industrial sectors used less energy in 2015 except for petroleum use, which increased by 2 percent. (sciencedaily.com)
It requires up to 90 percent less energy for heating or cooling, and leaves buildings comfortable and healthy throughout the year. (passivehousecanada.com)
The separating toilets that collect urine use less water than flush toilets, she wrote, and the simplified waste stream requires less energy in sewage treatment. (scientificamerican.com)