Do you want to find out how glass is made? BOY:Yeah. GIRL:Yeah. CURIOUS CAT:Well, glass starts off as sand. CURIOUS CAT:'A bit like the sand you might find on a beach. But to make clear glass ...

where the sand is finely polished grains of basalt and volcanic glass. Your average fleck of stardust is made of silicon carbide. Plants use silicon in their cell walls; some animals even use it ...

Silicon changed everything. Manufacturing transistors out of silicon allowed them to be made small enough to fit on a microchip, opening the gates to a rush of gadgets that have become smaller and ...