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? Comment below with the stories you're talking about, tweet them using #InstantIndex or email us at ABC.WorldNews@abc.com and they could appear on World News.

Circle in the Sky An observation circle that rises hundreds of feet above Grand Central Terminal in New York City and descends to pick up passengers could one day be another Big Apple landmark. The concept, designed to provide visitors with breathtaking 360-degree views of the city, is one of three plans submitted to the Municipal Art Society of New York.

Image credit: SOM

#FlagInHairLady As President Obama delivered his victory speech Tuesday night, Twitter's focus turned to the woman standing behind him with a flag in her hair. Singer Josh Groban tweeted: "How far into that lady's brain does that flag go?"

Image credit: ABC News

Victory Song Mariah Carey released her new song "Bring It on Home" this morning. The song was written for President Obama and it's no coincidence she debuted it after his re-election.