10:15 p.m. ET: Tonight on Nightline!… we've got the pornographic revolution spurred by 50 Shades of Grey… and a two-part presentation on one man's incredible journey to Everest… to confront the mountain where he lost a dear friend.

9:42 p.m. ET: Urban Outfitters under fire for selling a t-shirt with a symbol that closely resembles the Star of David Jews had to wear during the holocaust.

Screenshot Via Urbanoutfitters.com

8:13 p.m. ET: This, my friends, is the future of marijuna: a pot vending machine. Dispense Labs, a division of  the Dispensary Group, unveiled  Autospense  today, an automated dispensary that distributes medical marijuana.  Only in California…

 7:03 p.m. ET: Have you read 50 Shades of Grey? Then tune in for Nightline tonight!

4:47 p.m. ET: This video is super cool. Made by ReelNASA, it features a series of time lapse sequences photographed by the Expedition 30 crew aboard the International Space Station - complete with lightning and auroras. Set to the song "Walking in the Air," by Howard Blake:

4:28 p.m. ET: A lawyer for the handyman Othneil Miller whose basement workshop is the focal point of a new investigation into the Etan Patz case today denies he had anything to do with the little boy's disappearance more than three decades ago.

1:20 p.m. ET: Tonight, "Nightline" anchor Cynthia McFadden brings us the incredible story about Neal Biedleman, a survivor of the 1996 Everest climbing disaster, who decides to retrace his exact route on the mountain 15 years later. His hope is to make peace with the years he has spent replaying the tragedy over and over in his mind.

Credit: Neal Beidleman 2011

12:13 p.m. ET: DEVELOPING: Federal agents and the New York City police department launched a fresh investigation this week into the 33-year-old cold case of Etan Patz. Patz was just 6 years old when he vanished while walking to the bus stop in 1979 in the SoHo neighborhood of Manhattan.

Today, the FBI and NYPD announced believe they may find evidence in what was then a handyman's basement workshop just steps away from where the boy's home.

11:20 a.m. ET: George Zimmerman, the Florida neighborhood watch captain who shot and killed Trayvon Martin, appeared in court today. Zimmerman took the stand and apologized to the slain teenager's parents, who were sitting in the courtroom during Zimmerman's bond hearing.

9:45 a.m. ET: "Nightline" correspondent Vicki Mabrey offers us a moving reflection on her time spent with Levon Helms. She first met the drummer and singer of The Band for a "Nightline" interview in 2005. Read Vicki's story HERE, and watch her original interview HERE: