why clorets? [laughter] some go in and stays. and when it stays, it stays part of you, but it's radioactive, ready to fire at any moment. okay? and for every carbon 14 you bring in, you take on the average 5,730 years for him to fire off again, okay? the half-life is that long. but, gang, guess who's radioactive, me or you? - or all of us? - all of us. all of us? all of us, gang. we're radioactive. okay? 'cause we're composed of carbon. okay? and a lot of that carbon is carbon 14. and it's radioactive. now, what happens when the bad day comes and all of a sudden you check out and you're no longer breathing in anymore? do you become less radioactive or more radioactive? more. that's because you're under the ground. oh, you don't be seeing that. right. you don't be seeing that. so long as you keep breathing in, you're breathing radioactive materials in, right? they become part of you. but when they become part of you, don't they decay? once a carbon 14 decays, is it radioactive anymore? - no. - no. now, it's nitrogen. huh, nice and

why clorets, right? so every time we taka breath, you're breathing other people, and then when you breathe out, you're breathing out some of those people and you're also breathing the most important person in the whole universe and who's that? yourself. so some of your self is all around the atmosphere. you guys know that? now, let's do a little calculation. how many atoms are in your lungs at any moment with a normal-size breath? it turns out to be about 10 to the 22 atoms. that's one followed by 22 zeros, 10 to the 22 atoms in your lungs at any moment. get this, if you consider how many breathfuls of air are in the whole world, guess what the number turns out to be? 10 to the 22. 10 to the 22, so you know what that means, gang? there are as many breaths of air in the world as there are atoms in your lungs at any moment. how do we know how many breaths of air in the world? well, what you do is you calculate the area of the world. you guys know what the area of a ball the area of a sphere? anyone happen