The energy density of supercapacitors -- battery-like devices that can charge in seconds or a few minutes -- can be improved by increasing the 'messiness' of their internal structure. Researchers used ...

In Greek mythology, Proteus, son of Poseidon and prophetic shepherd of sea-beasts, could foretell the future. The elusive sea god was difficult to capture as he assumed many forms—a lion, a serpent, ...