Media Summary: NBC News' Dana Griffin reports on the significance of A powerful 7.7 magnitude earthquake has struck northern Dramatic CCTV footage of shaking cars, malls, and offices followed Monday's 7.6 quake off
Megaquake Japan Issues Warning After - Detailed Analysis & Overview
NBC News' Dana Griffin reports on the significance of A powerful 7.7 magnitude earthquake has struck northern Dramatic CCTV footage of shaking cars, malls, and offices followed Monday's 7.6 quake off A powerful 7.5-magnitude earthquake has struck off the coast of northern
