http://msnbcmedia.msn.com/j/MSNBC/Components/Slideshows/_production/ss-110221-new-zealand-quake/ss-110221-nz-quake-10.ss_full.jpg Christchurch cathedral Magnitude 6.3 - SOUTH…
Earthquakes and Earthâs Interior 3 Questions: How many have felt an earthquake? What is an earthquake (EQ)? Earthquake Statistics 30,000 EQâs strong enough to feel annually…