CelestialScience writes Researchers have built the first "buckyballs" composed entirely of boron. Unlike the original, carbon-based buckyballs, the boron molecules are not shaped like soccer balls, with tessellating pentagons and hexagons. Instead, they are molecular cages made up of hexagons, heptagons and triangles. As Lai-Sheng Wang of Brown University and colleagues report in the journal Nature Chemistry, each one contains 40 atoms, compared with carbon buckyballs which are made of 60. Boron is not the first element after carbon to get "buckyballed", but the boron balls may be the closest analogue to the carbon variety. Because of their reactivity, they could be useful for storing hydrogen.