let's go to somebody who knows a lot more than we do on this, kate hutton, a seismologist at cal tech. she joins me now on the phone. kate, so, again, you know, we watch this. we've had these, you know, l.a. got hit by one. it feels like the entire pacific rim, there's a lot of movement going on. is any of this related? or is this all coincidental? >> well, i think it's probably coincidental. i mean, we're always looking at that. but when we do statistics on earthquake activity, we find that the most obvious aspect of it is it's random. you know, if you sit there and throw coins for an hour, you could -- every once in a while, you'd get five or six heads in a row. that's pretty much what you're seeing here. >> what is it that you -- >> that's the most likely explanation. >> what would you be looking for, kate, to double-check that this isn't connected and this idea that sometimes it's out there, oh, does this mean the big one is coming, type of thing? >> well, unfortunately, you know, we've been working on earthquake prediction for decades, and we haven't figured out a way to do it. u

kate hutton joining us from pasadena bright and early there. all gone on there in the light of day. they'll if i can out how bad it was. initial reports show it avoided being as devastating as it potentially could have been. >> time now for this week's human factor. the stress of managing a human ailment is difficult. for a teen it can be lonely. we want to introduce you to a young man who took to writing to cope with a rare diagnosis. cnn's medical correspondent dr. sanjay gupta has the story. >> reporter: for schuyler eversol, high school started normally but his luck took a turn to the worse. >> i had severe dizziness. i couldn't walk or see straight for days at a time. >> reporter: at first he checked it up to stress but ebersol quickly realized something was wrong. >> no one knew what was wrong with me. there were whole sorts of hypotheses. >> reporter: home from school, he desperately needed an escape, and he found it in writing. >> i just started writing, and i would get lost in this world. i identified with this character. it was just a

i am joined by kate hutton. welcome. an 8.2 quake, you can't get much stronger than that, right?chile has the record for the largest earthquake since the size mom ter was invented, which is 9.5, which is quite a lot bigger than 8.2. still, 8.2 can be a very damaging earthquake. fortunately, in one way, it was offshore the so no one was sitting right on top of it. the other side of that is that off-shore quakes cause tsunamis. so that's a concern. >> what if the earthquake had struck land? >> the ground shaking would have been stronger. more buildings would have been damaged and there probably would have been more loss of life and property damage. >> i was stunned myself. the chileans were pretty calm throug all of this. there was no panic. >> if you look at the map behind me, you will see all the magnitude 8 plus earth quakes that have occurred in the last 140 years. they are very used to these earth quakes there. they do i a lot of drill activity and panic is not on the list. >> why so many earthquakes there? >> it is because two very quickly-moving plates, in other words, up to