![Dan Metcalfe hopes to determine how climate change will affect cloud forests, jungles high up in the mountains of tropical regions. Dan Metcalfe looks out over the Amazon Basin at 10,000 feet above sea level in the Peruvian Andes.](/sites/default/files/10-05-17/metcalfe_3.jpg)
The forests of Wayqecha, Peru rely on moisture from clouds to sustain themselves but climate change is moving that cloud layer higher every year. Plant ecologist Dan Metcalfe is in the midst of a bold experiment: by eliminating the cloud layer from a portion of the forest, he is attempting to see what exactly will happen as the cloud forest dries out.