Everything in this beautiful world is interconnected and is hence there for a reason; this video is a real life example of this maxim.

George Monibot, a British-born environment activist, explains in this short film how forests declined in the Yellowstone National Park following the 1914 decision of the US government to kill the wolves therein to protect the agri-farms. In 1914, he adds, when the federal government reintroduced the wolves, imported from Canada, the forest and the entire ecosystem of the park recovered on its own.

Credits: Sustainable Human