Cellphones are still safe for humans: researchers

New York

DO cellphones cause cancer? Despite years of research, there is still no clear answer. But two government studies released on Friday, one in rats and one in mice, suggest that if there is any risk, it is small, health officials said.

Safety questions about cellphones have drawn intense interest and debate for years as the devices have become integral to most people's lives. Even a minute risk could harm millions of people.