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.

Big Bloom There is a mystery in the Mojave Desert tonight: What is causing an unprecedented desert bloom across Joshua Tree National Park? Despite drought conditions, millions of trees are flowering and scientists are stumped. One theory is that last summer's monsoon rains and this year's cold weather are the culprits.

Image credit: David Danelski/The Press-Enterprise

Shark on the Line A fisherman off the coast of Oahu, Hawaii, hooked a tuna, but not before a 9-foot-long shark decided it wanted the catch. The shark lunged at the fish and the fisherman tried to reel it in. Eventually the shark won the battle by dragging the tuna down below.