China's fast fashion war 

A surprising set of materials could soon help make more efficient air conditioners that don’t overtax the electrical grid on hot days. As extreme heat continues to shatter records around the globe, demand for air conditioning is expected to triple in the next few decades. That’s why the race to build more efficient air conditioners has become increasingly urgent.  Although some companies focused on improving existing designs, others are looking to entirely new systems that use materials called desiccants. The hope is…