We may receive a commission on purchases made from links. When summer heat begins to ramp up, cooling your living spaces becomes a top priority. An air conditioner may not be the best option for the ...

When the heat index in Delhi, India, reached 125 degrees Fahrenheit this summer, so many people cranked up their air-conditioning that it led to power cuts. It’s one fundamental problem with modern AC ...

The Chinese bus company couldn’t work it out. Some days when its buses merely crawled along Shanghai’s streets, their power consumption would go through the roof. The reason why was a mystery. So, a ...