Travis Longcore

14 years.

That's how long Beth Pratt, California regional executive director of the National Wildlife Federation, and an extraordinary coalition of scientists, activists, and engineers have been pushing an impossible boulder up a very steep hill.

And right now, out in southern California, over 10 lanes of roaring traffic below on Highway 101, the enormous Wallis Annenberg Wildlife Crossing is just months away from the ribbon cutting.

What started as a desperate effort to save the genetically isolated mountain lions of the Santa Monica Mountains, galvanized by the legendary cat P-22, has turned into a global blueprint for large-scale habitat connectivity.

So when you're living in the middle of one of the most densely human-populated areas in the country, uh, that's not easy to find your own home.

So he did something quite extraordinary, although he pretty much had no choice, which was kind of march right into the middle of Los Angeles and found a home in Griffith Park, where the Hollywood sign is, the Griffiths Observatory.

Um, and he stayed, quite to the surprise of the scientists, who didn't think a critter would stay that long.

But he had enough food.