Two friends clear litter while hiking US trails 
Two friends, Seth Orme and Paul Twedt are hiking famous US trails and picking up every bit of litter they see along the way. They reportedly picked up 498 kilograms of rubbish on a four-and-a-half-month journey and recycled items whenever they could, during a hiking tour in 2015. They have picked litter including beer bottles, cigarette butts and discarded mattresses.