Robert D. McKeown, Deputy Director for Science, Jefferson Lab
In the recent past the experimental study of neutrinos has yielded a series of surprising results. The very light masses and strong flavor mixing have challenged theorists and also motivated experimentalists to perform ever more sensitive experiments. In this colloquium I will discuss these developments, including the observation of the unexpectedly large mixing angle 13 by the Daya Bay reactor neutrino experiment. Prospects for future studies, and opportunities for additional surprises, will also be discussed.