New technologies store cooling power for when it’s needed most. As temperatures climb on hot days, many of us are quick to crank up our fans or air conditioners. These cooling systems can be a major ...

In many parts of the world, the cool blast of an air-conditioner on a hot day is nowadays seen as a luxury rather than a necessity. Climate change is tipping the balance. Average global temperatures ...

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 ...