In science news, the head of the University of Pittsburgh Cancer Institute has issued what has been described as an unprecedented warning to his faculty and staff to limit cell phone use because of the possible risk of cancer. Dr. Ronald Herberman said children should only use cell phones for emergencies and that adults should keep the phone away from their heads by using a wireless headset or the speaker phone. According to the Associated Press, no other major academic cancer research institutions have sounded such an alarm about cell phone use. Devra Lee Davis, the director of the University of Pittsburgh’s Center for Environmental Oncology, said, “The question is do you want to play Russian roulette with your brain. I don’t know that cell phones are dangerous. But I don’t know that they are safe.”