James M. Acton, an associate in the Nuclear Policy Program at the Carnegie Endowment, answers viewer questions about the efforts to bring several damaged reactors under control in Japan three days after the devastating earthquake and a tsunami hit Japan’s northeast coast.
Acton will join Brian Williams Monday on NBC Nightly News to discuss the crisis in greater depth--you can also watch his recent interview with NBC's Anne Thompson below. Click here for more reporting on this issue.