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.

Happy Birthday , Mick Jagger! It's a milestone birthday for Mick Jagger. The Rolling Stones frontman turned 70 today but if you'd been to a Stones concert lately, you'd probably find that hard to believe. What's his secret to keeping up those moves? Jagger says he trains five or six days a week including pilates, yoga and sprints. He also dances to build stamina. He says the key is to go to bed early the night before a show. Early for the legendary rocker is 2 a.m.

(Carl Court/AFP/Getty Images)

Forgotten Lottery Ticket Pays $1 Million Joseph and Joanne Zagami from Massachusetts bought a $5 lottery ticket along with their groceries but it got stuck in the bag and they forgot about it. They threw the bags away but the next day Joseph Zagami remembered the ticket. When he went digging for it, he found it was a winner for $1 million.

Girl's Cartwheels Give Dolphin a Laugh Rescuers had to cut a humpback whale free from a shark net in Australia. And in Florida, a girl doing cartwheels at an aquarium gave a dolphin a laugh. The dolphin stopped to watch her mesmerizing gymnastics. The YouTube video has gone viral with more than 500,000 views.