The discovery of the burial site of a young child in a Kenyan cave dated to around 78 thousand years ago sheds new light on how Stone Age populations treated their dead.
Lithium-ion batteries have revolutionised portable electronics, but there are significant issues surrounding their recyclability and the mining of the metals within them. To address these problems, a team of researchers have developed a metal-free rechargeable battery that breaks down to its component parts on demand.