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.

Woman Digs Her Way O ut of Office Bathroom After getting stuck in an office bathroom Friday night, Karen Perrin used a 3-foot-long rod to chisel her way through the wall. After two hours, layer by layer, through dry wall and insulation, she finally broke through and created a large enough hole to fit her arm. She then reached out, grasped for the handle on the other side and opened the door.

Obama, Bush, Clinton Ride Air Force One On the flight returning from Nelson Mandela's memorial in South Africa, former President Bush used his iPad to show off his paintings to President Obama. Former Secretary of State Hillary Clinton looked impressed at the presidential Show and Tell.

Yellowstone Hot Springs Warmed by Underground Molten Rock Today, a University of Utah researcher told ABC News that Yellowstone's underground lake of lava, which warms the hot springs and Old Faithful geyser, may be 2.5 times bigger than originally thought. There is enough molten rock under Yellowstone to fill the entire Grand Canyon. If this super volcano erupted, the ash would cover most of the US.

(Official White House Photo by Pete Souza)