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...suicide was what turned me around," says O'Barry. "The [animal entertainment] industry doesn't want people to think dolphins are capable of suicide, but these are self-aware creatures with a brain larger than a human brain. If life becomes so unbearable, they just don't take the next breath. It's suicide." (See the top 10 animal stories...
...body of research is far from conclusive. In 1995, Lai co-wrote a study showing that a single two-hour exposure of RF radiation - at levels considered safe by U.S. standards - produced the sort of genetic damage in rats' brain cells that can lead to cancer. Though subsequent researchers - often funded in part by the wireless industry - failed to replicate Lai's results, a 2004 European Union - funded study reported similar findings...
...Dariusz Leszczynski, a research professor at Finland's Radiation and Nuclear Safety Authority in Helsinki, has done studies indicating that RF radiation may create a stress reaction in the cells that line blood vessels, leading to a dangerous breach in the blood-brain barrier. "Mobile-phone radiation may be able to indirectly hurt cells, perhaps by interfering with their ability to repair normal DNA damage," he says. "Given the scientific uncertainty, it's premature to say the use of cell phones is safe...
...radiation increases the chances of developing brain cancer, it should show up in long-term studies of cell-phone users. But many epidemiological studies have found no clear connection, including a 2007 Danish Cancer Society study of 421,000 cell-phone users, which led many in the media to conclude that mobiles are harmless. To date, "peer-reviewed scientific evidence has overwhelmingly indicated that wireless devices do not pose a risk," says John Walls, a spokesman for CTIA, a global wireless association. (See how to prevent illness...
Also, the study looked only at tumors that were diagnosed by 2002 - not long after daily use of cell phones became widespread. Brain cancers can take several decades to develop, so it might be many years before a measurable bump in cancer rates shows up. "The latency period we have is far too short," says Dr. Siegal Sadetzki, a cancer researcher at Israel's Gertner Institute whose epidemiological studies have found some connections between cell-phone use and salivary-gland tumors. "And today, people are using the phone much more heavily." (See TIME's special report "How to Live...