Why is the roof of the world covered in our shit? Lots of reasons, but it might come down to common laziness. The grueling hike up Mount Everest isn’t as pristine as you might imagine. Step out of ...

This summer, while most of us were frolicking on the trails, rafting on the river or lounging in a hammock, Shari Edelson was stationed at a trailhead on Colorado’s Mount Elbert talking to people ...