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.

President Obama and McKayla Maroney Are Not Impressed

Olympic gymnast McKayla Maroney and her fellow Team USA gold medalists visited the White House, where she and the President recreated the young star's famous pose. Maroney became an Internet celebrity during the Olympics for her much-imitated scowl after a second-place finish.

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Study Suggests Differences in Einstein's Brain Could Account for Amazing Intellect

A new study suggests Albert Einstein's extraordinary intellect many have actually been a result of an extraordinary brain. The study compared the scientist's brain with 85 "normal" human brains, Science Daily reports, and found that parts of Einstein's brain were actually different, in overall size and shape, from those normal brains. Those differences may have been partly responsible for Einstein's exceptional "visuospatial and mathematical abilities."

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