Ionizing and non-ionizing radiation.

Karl Denninger at Market Ticker has an informative piece on cell phone, microwave, CT scanner, and dental X-ray radiation and their effects on humans.

It’s particularly interesting on the radiation involved in those old tube TVs and computer monitors.

Mr. Denninger is invariably good on matters of technology, arithmetic, and risk that bewilder and terrify liberal twinks and bed wetters, which is to say 99% of politicians and most of your neighbors.