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."

Modern-Day Robin Hood Strikes Again

The anonymous millionaire hiding envelopes stuffed with money across San Francisco and leaving clues on Twitter struck again. Lucky winners popped up 45 miles southeast in San Jose. One envelope was found on a fire hydrant. One sleuth even found the hidden cash on live TV.

Most Inspiring Valedictorian

Griffin Furlong has a 4.65 GPA and has never missed a day of school (or baseball practice). He said he hopes to study engineering at Florida State. And he scaled those heights all while living in homeless shelters. He even wrote these three words - "Never Give Up" - inside of every baseball hat. An online site has raised more than $24,000 to help pay his college tuition. For more information, click here.