. >> joining us now from seattle is "techknow" contributor marita davidson. marita, great to have you with us. questions are being raised about the connection of fracking and earthquakes in a bunch of different states, arkansas, ohio ohio, oklahoma and texas among them. you went to see this what did you see? >> as you saw in that piece there we went to a small town in texas had a the that has been experiencing a sudden increase in earthquake activity. texas is not known to be earthquake country. and there are a lot of local residents that are extremely concerned and rightfully so. i would be concerned if earthquakes were suddenly happening in my backyard. and they're really demanding answers. they want answers. >> and this increase in earthquakes and the number of earthquakes is really striking hot just in texas. there were -- and not just in texas oopts there were only 20 per year in the eastern united states, you guys reported on in the last 30 years. and then more than 100 are happening yearly, recently? >> it's been quite an increase in the number of earth