The changing face of primate research

The worst moment in neuroscientist Andreas Kreiter’s 16-year struggle to defend his research came when his wife arrived home after the birth of their second child. Waiting for her was an envelope containing a death threat against their three-year-old. Kreiter, who uses macaques in his studies of the brain at the University of Bremen in Germany, is a veteran of the fierce and periodically violent tactics of animal-rights activists. Read more.