A shiny gray crystal called platinum-bismuth-two hides an electronic world unlike anything scientists have seen before.

Voltage fade has quietly limited some of the most promising lithium-ion cathodes, eroding the energy they can deliver long ...

In June, 2014, a man began digging into the soft red earth in the back yard of his house, on the outskirts of Kolwezi, a city in the southern Democratic Republic of the Congo. As the man later told ...