lehighvalleylive.com – What’s the most commonly found piece of litter on the side of Pennsylvania highways? It’s not soda cans. It’s not scrap paper. It’s cigarette butts, according to the Pennsylvania Litter Research Study. The study was compiled earlier this year. The City of Easton is trying to do its part to reverse this trend. The Easton Ambassadors have collected more than half a million cigarette butts from recycling receptacles placed around the city starting in 2015.