Did you know the entire universe seems to be short on lithium? Astronomers actually refer to it as the Cosmological Lithium Problem. The current standard model of the Big Bang theory (not the tv show) matches up with observations about (a) microwave background radiation (b) cosmic expansion as measured by light from distant supernovae and (c) primordial abundances of hydrogen and helium. There is a bit of an issue with (c) however.