70 Wolves Changed ENTIRE Rivers in Yellowstone

追加: 2026-06-03

[00:00:00]Did you know that bringing back 70 wolves to Yellowstone accidentally changed the shape of rivers? In 1995, scientists [music] released these predators after they'd been gone for 70 years. The wolves didn't just hunt deer and elk, they scared them away from riverbanks. Without animals eating all the plants, trees started growing back.

[00:00:19]The roots [music] held soil together, which made rivers flow in completely new paths. Birds returned, beavers came back, and even bears found more food. 70 wolves literally redesigned an entire ecosystem just by existing.