When it comes to the scan and the pat down, you should know that there are 244 full-body "backscatter" X-ray scanners in use at 36 airports in the United States. Other airports use millimeter wave scanners, which do not use radiation, or metal detectors.
read more

We’ve been reassured that low doses of X-rays, like the ones we get at the dentist’s office, are not harmful. But now researcher Markus Lobrich says they may be even MORE harmful than higher doses of X-rays. Low doses of X-rays may actually do long-lasting damage to cells.
read more