Interesting Engineering on MSN

3D-printed cartridge system recovers rare earth minerals from industrial waste

A new U.S. startup is aiming to recover high-purity critical minerals from domestic waste ...
C&EN

Seesaw device uses sunlight and gravity to extract lithium from seawater

Seawater has tons of lithium, but it is present at a concentration of just 200 parts per billion (ppb) and is drowned by ...