Lead, engine exhaust and chloroform have a new member joining them in the carcinogenic hazard category...cell phones. The World Health Organization now lists mobile phone use to the list.  A team of 31 scientists from 14 countries, including the United States, made the decision after reviewing peer-reviewed studies on cell phone safety. The team found enough evidence to categorize personal exposure as "possibly carcinogenic to humans." What that means is that right now there haven’t been enough long-term studies conducted to make a clear conclusion if radiation from cell phones are safe, but there is enough data showing a possible connection that consumers should be alerted. The type of radiation coming out of a cell phone is called non-ionizing which is similar to a very low-powered microwave oven. The European Environmental Agency has pushed for more studies, saying cell phones could be as big a public health risk as smoking, asbestos and leaded gasoline. Manufacturers of many popular cell phones already warn consumers to keep their device away from their body and at a safe distance when in use.