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."

Two Winning Mega Millions Tickets Sold Two winning tickets were sold in Tuesday's Mega Millions drawing, lottery officials said. The winning tickets were sold in Merritt Island, Brevard County, Fla., and Maryland. The jackpot for the drawing was estimated at $400 million, with a cash option of $224 million, one of the largest lottery jackpots in U.S. history.

Baby Gorilla Born by C-Section Battling Pneumonia A baby gorilla born by emergency C-section on March 12 at the San Diego Zoo is battling pneumonia, zoo officials said today. The baby girl, who has yet to be named, is under the 24-hour care of zoo veterinarians and human neonatal specialists from UC San Diego Health System, according to a statement. "We've been working with the baby all weekend and after having several days of experience treating her, it's pretty obvious that we've been dealing with pneumonia," Nadine Lamberski, associate director of veterinary services at the San Diego Zoo Safari Park, said in a statement.

(Courtesy the San Diego Zoo)