Do cell phones cause cancer? And what exactly does the World Health Organization have to say about it? A Chicago scientist who contributed to the latest report joins us to clarify the findings.

• More on the Story: Tips to reduce cell phone radiation exposure
• Are you concerned about possible cancer risk from cell phones?
• Scientist David McCormick's bio and research
• WHO press release
• National Cancer Institute Fact Sheet: Cell Phones & Cancer Risk
• American Cancer Society: Cancer Causes: Cell Phones
• Environmental Working Group: Cell Phone Radiation Exposure