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.

Tonight's Instant Index:

First Time Father
Comedian and Grammy winning bluegrass musician Steve Martin, 67, and his wife, Anne Stringfield, confirmed today that they are parents for the first time.

Image credit: Tim Mosenfelder/Getty Images

Coming Back
"Good Morning America" anchor Robin Roberts will be back at the anchor desk one week from today. Tonight, she is gracing the cover of People magazine and opening up about her recovery from a bone marrow transplant. She said doctors had warned her that at some points she might feel like she was dying and admitted that did happen. "I was in a comalike state," Roberts told the magazine. "I truly felt I was slipping away. Then I kept hearing my name."

Image credit: Courtesy of People Magazine

Watergate
Marco Rubio's water break during the Republican response to the State of the Union lit up social media Tuesday night. One viewer tweeted: "We all just watched the next SNL opening skit." Rubio had a good sense of humor about the incident, telling George Stephanopoulos this morning that "God has a funny way of reminding us we're human."

Image credit: Topsy.com