Readers of IEEE Microwave Magazine may recall my column from several months ago in which I described an unclassified, U.S. government-led, five-year research study on the health effects of two-year (or, in most cases, lifelong) exposure of rats and mice to the RF radiation used for wireless cellular telephone operations. This project, which began in 2005, is the largest animal cancer study ever undertaken by the National Toxicology Program (NTP) of the National Institute of Environmental Health Sciences (NIEHS), with an initial budget of US$12 million.