Sebastian Kennerknecht / Agricultural land surrounded by natural habitat, Santa Cruz Mountains, Monterey Bay, California

Mark Raycroft / Pronghorn Antelope (Antilocapra americana) herd crossing fence in winter, North America

Benjamin Olson / Guanaco (Lama guanicoe) mother looking at crias stuck behind ranch fence, Torres del Paine National Park, Chile

Ingo Arndt / Guanaco (Lama guanicoe), dead after being caught in wire fence, Patagonia, Chile

Ingo Arndt / Guanaco (Lama guanicoe), dead after being caught in wire fence, Patagonia, Chile

Sebastian Kennerknecht / Highway acts as a barrier for wildlife, Highway 17, Santa Cruz Mountains, Monterey Bay, California

Sebastian Kennerknecht / Highway acting as a barrier for wildlife, Laurel Curve, Highway 17, Santa Cruz Mountains, Monterey Bay, California

Sebastian Kennerknecht / Highway acting as a barrier for wildlife, Laurel Curve, Highway 17, Santa Cruz Mountains, Monterey Bay, California

Sebastian Kennerknecht / Sunda Clouded Leopard (Neofelis diardi) researcher Andrew Hearn radio tracking, with computer showing telemetry tracks of how male stays only within forested areas along the river, while avoiding plan...

Gary Bell/ Oceanwide / Mooring chain which has carved trench into coral reef, Christmas Island, Australia

Sebastian Kennerknecht / Houses fragment central hardwood forest, leading to higher Lyme-disease cases due to higher number of mice, Vernon, Connecticut

Benjamin Olson / Guanaco (Lama guanicoe) cria stuck behind ranch fence, Torres del Paine National Park, Chile