How wolves change the shape of rivers

This amazing video shows how a small change can have unimagined and far reaching effects.  In 1995 wolves were reintroduced to the Yellowstone Park after a 70 year absence.

I won’t give a away the sequence of events, it is pretty amazing.

So – once again proof that changes in choices and behaviour may seem a big hassle for a small difference but they can have a real and far reaching impact on your surrounding world.