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.

Mysterious Sinkhole in Kansas A rancher in Kansas went out to see his pasture and found a hole 90 feet deep and about the size of a football field. Because the giant sinkhole isn't near an oil field or a broken water main, its cause is a total mystery. The rancher's cattle are all right but the sinkhole is growing and he can't keep the tourists away.

(KAKE/ABC News)

Scientists Serving $330,000 Lab Burger For the first time in history there's a new kind of hamburger. A team of scientists in the Netherlands are serving up a $330,000 burger that took years to make in a lab. It was grown in a dish from the cells of a cow. Two food reviewers tried the burger in London today and said it was a little dry.

Tiger Woods' Son Sees Him Win for the First Time Tiger Woods matched a PGA tour record for victories in a single tournament Sunday at the Bridgestone, much to the delight of his 4-year-old son, Charlie, who'd never seen him win. As Woods climbs his way back to success after personal and professional disasters, he said the fact that Charlie had finally gotten to see him win had made it a special day for each of them.