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.

Ben Affleck Cast as Next Batman Oscar winner Ben Affleck has been cast as Batman in the sequel to "Man of Steel." He will join a superstar list of past Batman actors including Michael Keaton, Val Kilmer, George Clooney and of course the most recent Batman, Christian Bale. "Ben provides an interesting counter-balance to Henry's Superman," director Zack Snyder said in a statement to ABC News. "He has the acting chops to create a layered portrayal of a man who is older and wiser than Clark Kent and bears the scars of a seasoned crime fighter, but retain the charm that the world sees in billionaire Bruce Wayne. I can't wait to work with him." The film will bring Batman and Superman together for the first time on the big screen, and will also bring back "Man of Steel" stars Amy Adams, Laurence Fishburne and Diane Lane. After the casting was announced, #BetterBatmanThanBenAffleck was trending on Twitter.

(Photo by John Shearer/Invision/AP)

First Look Inside Atlanta Zoo's Twin Panda Cubs' Nursery The twin panda cubs at Zoo Atlanta, the only surviving panda twins in the U.S., continue to mercilessly charm the zoo's veterinarian staff. The cubs were about the size and shape of sticks of butter, weighing around 4 ounces each, when they were born July 15. Now each of the pandas are around the size of a football. They're the first giant pandas to be born in the U.S. in 2013 and the only giant panda twins ever to survive in the U.S. When they're not with their mama panda, the cubs spend time curling up in an incubator.

Rockies' First Base Coach Gives Advice to Young Fan During a recent Phillies vs. Rockies game, Rockies first base coach Rene Lachemann gave a ball to a young fan in the stands. But first, he had some words of advice for the kid. "When your dad tells you to take the trash out, you take it out," Lachemann was heard telling the kid in a video of the interaction. "When your mother tells you to clean your room up, you clean it up. When you go to the bathroom, you lift the toilet seat up. Don't be peeing on the toilet seat, you understand?"