A puma in Patagonia shortens its nightly patrol. A wild boar in Poland sticks closer to the forest edge. An elephant in Kenya reroutes around a road it crossed freely a decade ago. None of these ...
Somewhere in the northern Rockies, a collared gray wolf veers off a ridgeline trail it has used for weeks. Nothing visible has changed in the forest. But a mile downslope, a pair of hikers are working ...