Adam Ragusea: As scary news reports of radiation damage in Japan crawl all over our newspapers, televisions, computer screens and radios, viewers across the world are worried about a nuclear catastrophe.
But some people who actually know a thing or two about radiation and nuclear physics have been reacting with a different emotion - more of a cringe than a shiver. People like Ellen McManis, a student at Reed College in Portland, Ore., and a senior operator at her school's research reactor.
"No one has any context for these numbers which are coming in from Japan," McManis said. "I was listening to people saying, 'oh this is 20 times the normal level, this is 10 chest x-rays.' I got asked a question on the Internet one morning, 'is 20 microsieverts large?'"
McManis says Japan's Fukushima Dai-ichi nuclear power plant disaster is very serious, and we still don't know how bad it's going to get, but most of the radiation that's been observed in Northeast Japan and reported in the news is actually really, really tiny.