This headline is misleading - it should say may be harmful - and the article itself is sensationalized.

While there is a body of evidence that shows “biological effects” (a very vague term that covers everything between slightly warming the skin and full-blown cancer) from cell phone radiation, it is extremely inconclusive and usually based on experimental data that bears little relevance to human beings and actual cell phones in the real world (as opposed to, say, a bunch of rats in a lab being subjected to RF waves at levels 100s of times more powerful than those emitted from a typical phone).

It’s true that the research is lacking and, in the interests of science, there should be no restrictions on research into this area. However, to go from that to “Cellphone radiation is harmful” is just disingenuous.