Valve’s weekly update to Left 4 Dead 2’s gameplay altering Mutations brings us “Follow the Liter,” a new spin on the gas guzzling Scavenge mode. The better news? The game’s debut Mutation is going to ...

You probably know what a cardinal looks like, but we bet you've never seen a "leucistic bird." If you haven't heard the term, you're not alone. This rare mutation "results in a total or partial ...