Chile's Puerto Williams, a paradise for scientists to study climate change

A glacier over Darwin's mountain range is seen during a journey through the Beagle Channel in the Magallanes region, the southernmost of Chile. Photo: AFP

Hidden inside pristine forests in Chile's deep south, known as the end of the world, lie potential early warning signs of climate change.

Puerto Williams on Navarino island, which is separated from the South American mainland by the Beagle Channel, is the world's southern-most town.