From the unconventional and awe-inspiring to the hilarious and heartwarming, here's a look at some of the most interesting photos, videos and stories that have our newsroom talking today. What's capturing your attention, filling your inbox and cluttering your Facebook/Twitter feed? Tweet us the stories you're talking about using #InstantIndex, or email us at ABC.WorldNews@abc.com, and they could appear on World News.

Black Swans Spotted Surfing in Australia Four black swans were spotted surfing on giant waves off the coast of Australia. Once they reached the shore, they flew back out to sea to catch another.

High School Students Pull Christmas Prank Students at Kilgore High School in Texas played a little Christmas prank on their classmates and teachers. Someone hide inside a Christmas tree costume while people posed next to it for photos. The reactions ranged from jumps and screams to even a few punches.

(ABC News)

Brad Pitt, Keith Richards Celebrate Milestone Birthdays Today is a milestone birthday for two familiar faces. It's hard to believe, but Brad Pitt turned 50 today. He's even gracing the cover of AARP Magazine. Rolling Stones guitarist Keith Richards turned 70 today.