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."

Beyonce Sings, Dances With Terminally Ill Cancer Patient Beyonce went out of her way in Las Vegas this week to make the wish of a terminally ill cancer patient Taylon become a reality. All Taylon, who has an inoperable tumor in her brain, wanted to do was dance with Beyonce. The 32-year-old singer posted a video of her dancing with the young girl. In the video, the "Single Ladies" singer stepped off stage to hug Taylon, give her a kiss and even let her sing a few lines from "Survivor."

McDonald's Closing Employee Assistance Site After a series of postings that caused embarrassment for the company, McDonald's said it will close its employee assistance website. In the latest gaffe, earlier this week McDonald's employees were warned by the company's McResource website about the health dangers of eating fast food.

Delta to Honor Mistake Fares Air travelers could book Delta flights for very low prices earlier today, some as low as $20 round-trip. The airline told ABC News that it would honor these "mistake fares." The frequent fliers on the popular message boards on FlyerTalk.com began reporting the "mistake fares," as they're called in the industry, at 9 a.m. today. Delta's contract of carriage states that in the event of an "erroneous" fare, " Delta reserves the right to cancel the ticket purchase and refund all amounts paid by the purchaser or, at the purchaser's option, to reissue the ticket for the correct fare." But rules set forth by the Department of Transportation state otherwise, saying that an airline must honor a purchased ticket, mistake fare or not.