Following months of congressional pressure, the Transportation Security Administration has agreed to contract with the National Academy of Sciences to study the health effects of the agency's X-ray body scanners. But it is unclear if the academy will conduct its own tests of the scanners or merely review previous studies.
The machines, known as backscatters, were installed in airports nationwide after the failed underwear bombing on Christmas Day 2009 to screen passengers for explosives and other nonmetallic weapons. But they have been criticized by some prominent scientists because they expose the public to a small amount of ionizing radiation, a form of energy that can cause cancer.
Source: ProPublica. Read full article. (link)