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Christopher columbus. it's made out of granite. it's radioactive but perfectly safe. as you can see, the meter is pretty much pinning. you're exposed to it every time you fly because you're exposed to radiation of outer space. each year walking around the planet each of us is exposed to 3.5 millisieverts, that's the term they use, of radiation, that's about 67 chest x-rays or the same as 134 cross-country plane trips. in order to get radiation sickness, you need to be exposed to 1,000 millisieverts at once. for most people, a fatal dose is about five times that. to put this all in perspective,...

Done. we're talking about carbon 14, uranium, which is used in much, much higher concentrations to power the nuclear plants. one unit of measurement when we talk about radiation is the miliseivert. on average per year, americans get 3m illisieverts per year. for one thing, when you get on a plane, you have less atmosphere above you protecting you from radiation on space. the plane, the levels you're exposed to are a bit higher than normal. we're looking at about three days worth in a five-hour coast to coast flight. >> wow. i fly a lot during the week. what else? >> it goes up for chest x-rays...

If the levels become higher than that. >> at ten times the normal level, would than the equivalent, say of a chest x-ray? >> it would probably be equivalent to a couple of chest x-rays. really, not a huge issue at this point. >> now, a number of images have been shown over naevval officer sailors given potassium iodine tablets, why would they be given those if this wasn't an issue to worry about? >> i can speak for the urs navy the iodine pills are not going to be useful at this point. the only way iodine gets into the body is by drinking milk and i don't think that's an issue here. i think pe...

I've had chest x-rays, clonescopies, i see a psychologist, have a variety of hobbies to reduce stress, i don't drink, i don't smoke, i don't do drugs, i don't have crazy reckless sex with strangers. if charlie sheen outlives me, i'm going to be po'd, and charlie found it as a compliment. he thought it was brilliant -- >> he found it as a compliment? >> he did, and he thought that chuck was write ago reflection of his thoughts, and charlie thinks chuck is calling him superman. >> it's just sad. >> he has so much talent, so much potential, and a nice guy to talk to. everybody just wishes him wel...

Cheese but don't tell michelle. >> greta: no question wasilla, alaska best known as the hometown of former governor sarah palin, until now. are you ready for salmon flavored vodka? you heard that right. alaska distill just launched smoked salmon flavored vodka. the man who invented it said madness and drunkenness led to the creation. really! apparently the distill had a heave bucket nearby until the recipe was perfected. some bartenders are getting creative with it. cheers! >> finally all we can ask is what is wrong with some people? two nights ago we told you about a person who bought three o...