the arkansas state line, there was also structural damage. you may have seen it earlier. that tower that collapsed, part of the administration building at saint gregory's university, also homeowners reporting chimneys down and minor stuff like cookie jars crashing to the floor, pictures falling off the walls. you see that house got it pretty bad. the serious part may have been just how long the trem bling went on. >> it started rumbling, and we were hanging on to the dresser, because we felt like we were going to fall. and it was a long run. it -- a long one. it just went on and on and on, and i kept thinking it's going to be over. >> seismologists say they can't explain the spike in oart quakes but some blame fracking, the drill fog natural gas. there have been hundreds of injection wells drilled deep into the ground in arkansas and oklahoma but gas companies say there is no evidence connecting the two. bill: quite a shocker over the weekend, the earth