You can usually find good clay in low areas of islands or land, especially if volcanoes helped form the land.

VOA: special.2009.09.14

For some who understand the biophysics of RF and EMF, going back to first principles provides a reality check on a possible threat from this low energy form of radiation.

FORBES: Should The FCC Re-Examine Cell Phone Radiation?

Oddly, a problem that is high-tech in origin has strengthened a low-tech form of communication.

ECONOMIST: Local newspapers in peril

Between 22% and 40% of people with NHL are estimated to have the follicular or low-grade form.

BBC: The drug targets cancer cells directly