Kraków (Poland) (AFP) - UNESCO on Wednesday "strongly" urged Poland to stop logging the older parts of the ancient Bialowieza forest, a world heritage site that includes some of Europe's last primeval woodland. The large-scale logging authorised by the Polish government began in May of last year and has since drawn concern from environmental activists, scientists and the European Union. UNESCO "strongly urges (Poland) to immediately halt all logging and wood extraction in old-growth forests," the World Heritage Committee said in a statement during its annual session.