Richard A. Muller

“THIS book is radioactive. And so are you. Unless you are dead, in which case we can tell how long ago you died by how much of your radioactivity is left. That’s what radiocarbon dating is—the measurement of the reduction of radioactivity of old bones to deduce the time of death. Alcohol is radioactive too—at least the kind we drink. Rubbing alcohol usually isn’t, unless it was made organically—that is, from wood. In fact, the US Bureau of Alcohol, Tobacco, Firearms and Explosives tests wine, gin, whiskey, and vodka for radioactivity. A fifth of whiskey must emit at least 400 beta rays every minute or the drink is considered unfit for human consumption. Biofuels are radioactive. Fossil fuels are not. Of those killed by the Hiroshima atomic bomb, the best estimate is that fewer than 2% died of radiation-induced cancer. These statements are all true. They are not even disputed, at least by experts. Yet they surprise most people.”
― Richard A. Muller, Physics for Future Presidents: The Science Behind the Headlines

“Many people also worry about microwave radiation from cell phones. Unlike X-rays, which are high-energy photons, microwaves are photons with extremely low energy. They deposit their energy in the form of heat; that’s what they do in microwave ovens. They do not break DNA molecules in the body (unless they actually burn and char the material), and therefore they pose no risk of causing cancer in the way that X-rays and other energetic radiation (even sunlight) can. The main danger is the heat. Much of the fear of microwaves undoubtedly comes from the fact that they share the name radiation with the other, far more dangerous forms, such as gamma radiation. The fear that some people have shown toward such cell phone radiation finds its origin not in physics, but in linguistics.”
― Richard A. Muller, Physics for Future Presidents: The Science Behind the Headlines