Gizmodo Follow 50 Years of Bronx River Clean-Up Efforts Lead to the First Otter Sighting in a Century The discovery is yet another sign that clean-up efforts in the once-heavily polluted area are working. https://gizmodo.com/50-years-of-bronx-river-clean-up-efforts-lead-to-the-first-otter-sighting-in-a-century-2000801512 gizmodo.com
