“Last Thursday, the bus didn’t arrive at 3:15 p.m. like it usually does. It arrived at 4 p.m. This Thursday, the same thing happened. The bus arrived at 4. The school didn’t give any notice.” “It’s ...

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 ...

Humming air conditioners are the soundtrack to summer in the U.S., given that almost 90% of households use them for cooling. Even though air conditioning is everywhere, however, many people still have ...