'How Wolves Change Rivers'

I recently ran across the video above, “How Wolves Change Rivers”, and thought it was fascinating. So much so, that I wanted to share it here, as I often do with things I see somewhere on the Internet. That’s one of the reasons for having a personal blog, isn’t it?

Anyway, this particular video was released back in February, though I only saw it in the past few days. Part of the YouTube description sums it up well:

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.

When we hear about unexpected environmental consequences, it’s usually about something going wrong—sometimes even spectacularly so. Which is why this captured my attention: It’s refreshing to see unexpected environmental consequences that are GOOD.

The truth is, smart as we humans are, there’s so much we don’t know about our own planet and everything on it. Still, we’re learning more all the time. It’s good when the rest of us can come along for the ride.