The Polylepis tree sustains the Andes and the Amazon. To preserve these priceless landscapes, a pioneering biologist has planted millions of them.

Inca-style terraces, cloud forests and llamas aren’t relics of the past – they are the tools required now, particularly vital ...

Constantino Aucca Chutas is a biologist, and part of the Rolex Perpetual Planet Initiative. The ancient mountains of the Andes are home to spectacled bears, pumas and the magnificent Andean condor.

A species of leaf-eared mouse, called Phyllotis vaccarum, has surprised scientists by making the summits of the Andes mountains its home. The mouse holds the record for the highest living mammal.