brain. cell. phone.

Martin Cooper,  "Father of the Mobile" (from: MobHappy)

"The highest-quality research data available suggests that long-term exposure to microwaves from cellular phones may lead to an increased risk of brain tumors, reports a paper in the November/December issue of Journal of Computer Assisted Tomography." Read more...

"Cell phones used by patients and their visitors were twice as likely to contain potentially dangerous bacteria as those of healthcare workers."
Read more...

"The 'precautionary principle' suggest that even if chances of negative health effects are low, it makes sense to offset them by avoiding unnecessary exposure to risk. To that end, it can't hurt to use phones with headsets or speakerphone mode whenever convenient."
Read more...
Here are two links (to other links) about the dangers of cell phones to bees... and  balls.
 And here's an article that delves into the statistics of it all: (from bOING bOING)