Mountain Lion — the latest version of Apple's OS X — is now available in the Mac App Store for $19.99. And it's definitely a worthwhile operating system upgrade. Here's why. Hello, Mac! Hello ...

Another wild mountain lion, this time in the Santa Monica Mountains, has been found dead following a possible “vehicle strike,” California officials said in a statement Friday.

Everybody knew the mountain lions were around, but back then daytime sightings were rare. We would sometimes hear a lion scream in the dusk, a bloodcurdling sound, in the canyon behind our house.