website, it's radiationnetwork.com. you will be able to access a radiation monitoring network of about a dozen monitoring sites around the united states, which is updated every 3 minutes. so far, measurements are well within normal levels. you can join and contribute to that system. they're offering monitoring equipment and software. you can set it up wherever you are to the radiation map that's on-line. most experts seem to think that threatening levels of radiation will not be reaching the western hemisphere. megyn: dr. segal has a different concern about americans and he's up live in about 5 minutes. gregg, thank you. we're moments away from talking with shepard smith. he is live in downtown tokyo as he has been all week on the situation there. we're waiting for the u.n. vote