Add Yahoo as a preferred source to see more of our stories on Google. Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, ...

developing solutions to today’s environmental challenges. On the windswept slopes of the Andes mountains, rugged forests grow. These exceptionally hardy trees and shrubs, known as Polylepis, have ...

Servat, Grace P., Mendoza, Wilfredo, Hurtado, Natalí, Castañeda, Roxana, Olarte E., Magaly, and Alcocer F., Renzo. 2013. "Growth, Regeneration, and Phenology of ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

CC0 Usage Conditions ApplyClick for more information. Species of Polylepis are shrubs or trees native to the mid- and high-elevation tropical Andes. Some species of Polylepis form woodlands growing ...