Arjun Makhijani studies shows how the U.S. could have low-carbon energy. He believes wind and solar energy would be cheaper and safer than nuclear power.
Eddie Bernard, director of the Pacific Marine Environmental laboratory in Seattle, said scientists model how a tsunami will strike a coast - even far away.
Did a supermoon cause the massive 8.9-magnitude earthquake and deadly tsunami in Japan on March 11, 2011? No. But supermoons can cause flooding along coastlines.