PBS Eons has a new episode over on Youtube.  This one is about the co-evolution of venomous snakes and the rest of the animal kingdom.

For some, the rise and spread of venomous elapids was just another challenge to adapt to. For others, it was a catastrophe of almost apocalyptic proportions. And we humans are no exception, because it seems that when elapids slithered onto the ecological scene, not even our ancestors were safe…