ONE of the most exciting pieces of research on orang-utans and how they talk to each other was published on May 7 by a team of researchers led by Dr Serge Wich of the University of Zurich.
ONE of the most exciting pieces of research on orang-utans and how they talk to each other was published on May 7 by a team of researchers led by Dr Serge Wich of the University of Zurich.