There are two open questions in physics which seem
unrelated. The first is why is there only matter around us? The second
is how neutrinos acquire their tiny masses? It turns out that these
two open questions may be related. That is, the same mechanism that
gives neutrino masses can also generate a universe without
anti-matter. In this talk I will explain the connection between these
two issues and describe the on-going theoretical and experimental
efforts in understanding them.