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."

Grand Canyon Skywalk Gets a Cleaning

Workers dangled 4,700 feet up in the air as they cleaned the Skywalk today. The workers said the trick is not to look down. See more here.

Meet the New Goliath

Six Flags Great America in Gurnee, Illinois, officially opened Goliath, a triple record-breaking coaster today. It's the fastest, tallest and steepest wooden roller coaster in the world. It plunges riders down 180 feet while rocketing through twists and turns at 72 miles per hour at a near vertical 85 degree angle. Read more here.