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Up to a 7.5 magnitude earthquake after the upgrade, the one in japan this weekend is considered to have been a 9.0. joining sus ruus is rush holt. thank you very much for being with us. >> guard to be with you and thanks for the reports from bob and lee. this is a good program >> thank you very much. nice of you to say that. let me get your reaction to what bob was talking about the news that this third explosion at this reactor in japan may be more serious than the previous two and there was a release of radio activity. an american public listening to you tonight thinking of you as a wngman a...

Has about 1,000 times the activity of the hiroshima bomb. maybe 10 times that. it can't blow up, but it releases more radio activity than an a-bomb. that's different than a crash of a plane or a bridge coming down. we have to come to terms with the fact that this is a technology of immense danger and maybe we are not capable of handling it. >> wouldn't it be obvious that the nuclear power plans should not be located near possible earthquake zones? >> exactly. it's essentially a jar with a vast amount of radio activity in it. placing the jar at an earthquake fault can cause it to break and be r...

Question. fuel is very hard to come by. we drove up from tokyo overnight. cars were being turned away that didn't have special permits we were able to get a permit to go on a tollroad. even if you get in a car, there is no gas for them we are leaving rush hour in tokyo and this huge city that is notorious for traffic jams, very few cars on the road. that is against the people trying to get out of the area. we are all becoming amateur nuclear fizzists andy woo don't know what we don't know about how far the travels and 12 1/2 miles is the zone they believe is safe. the wind shifts and we are aw...

Accident. three mile was very difficult. it was caused by operation error. this was following by a devastating earthquake and tsunami. nonetheless the nature of cooling the reactor was the same. three mile island was the expense x tense sieve meltings of the core. what we have to hope is there's a similar outcome on this occasion. any time you have a core melting there's a substantial increase for radio activity but there's no guarantee. >> you can find out more about the impact the earthquake has had on our website. i know you've got a lot of questions about that as have the rest of us. got i...

Radiation. some radiation can't get past the skin, it bounces off the skin, others pass all the way through like x rays. some last for a second and exist no longer, while others can exist for hundreds of thousands of years. what really matters is how radioactive is a substance, what type of radio activity it is and how long you're exposed. that's why the japanese government in all of these cases is simply encouraging people to stay inside their homes rather than being out in the open air where they would have a higher level of expose chur. we have to put it in context. we are exposed to radiat...