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.

A controversy may be heating up at 29,000 feet. Sixty years ago this week, Sir Edmund Hillary became the first person to scale the world's highest peak, Mount Everest. Since then, the mountain has become congested with eager thrill seekers. To alleviate any traffic jams, a ladder has been set up for the final 40 feet to the summit, so treacherous that only one hiker can ascend at a time. While climbers would only use the ladder on the way down, critics say that's cheating.

With a tribute, one rock legend pays his respects to another. Over the holiday weekend, Sir Paul McCartney was in Memphis, Tenn., for his tour and decided to visit the famous grounds of Graceland, where rock legend Elvis Presley is buried. A lifelong Elvis fan, McCartney left a guitar pick at the grave with the name Vernon Elvis Presley etched in its side, adding the gift was "so Elvis can play in heaven."