Hitching a hollow ball of carbon to a diamond-shaped lattice yields a useful piece of electrical circuitry. The new synthetic molecule consists of a buckyball, a bound set of 60 carbon atoms shaped like a soccer ball, bonded to diamantane, a cage-shaped arrangement of carbon and hydrogen that resembles diamond. The creation, dubbed a buckydiamondoid, allows electricity to flow in a single direction only, researchers report September 9 in Nature Communications.