Pradeep Sangwan, who cleans up the hills, one trek at a time

Pradeep Sangwan, founder of non-profit organization Healing Himalayas, leads a team of volunteers in cleaning up mountains of garbage left by tourists in the Shimla hill town. The group collects 90 bags of non-recyclable waste, which are then sent to a local facility to be converted into fuel for a cement plant. Sangwan's team...