The Monkey WarsThe controversy over the use of primates in research admits no easy answers. We have all benefited from the medical discoveries of primate research vaccines for polio, rubella, and hepatitis B are just a few. But we have also learned more in recent years about how intelligent apes and monkeys really are: they can speak to us with sign language, and they can even play video games (and are as obsessed with the games as any human teenager). Activists