11:15 p.m. ET: Further proof that Nightline is ahead of the curve: Global smash hit "Somebody That I Used to Know" is closing in on 200 million YouTube views this week, making it one of the most-viewed clips ever on the 7-year-old platform.

6:31 p.m. ET: From the Brian Ross Investigative Unit: U.S. and European officials say that even though an  al Qaeda bomber was stopped before he could board a plane for the U.S., the threat is far from over - there are believed to be several other would-be bombers with similar non-metallic devices that could get through most airport security screening. "Nightline" will have the latest developments at 11:35 p.m. ET/PT

4:31 p.m. ET: DEVELOPING: The Associated Press reports that the CIA thwarted a plot by al-Qaida's affiliate in Yemen to destroy a U.S.-bound airliner using a bomb with a new design around the one-year anniversary of the killing of Osama bin Laden. More HERE.

2:22 p.m. ET: "Nightline" anchor Terry Moran tweets about an alarming story out of China:

More HERE.

1:43 p.m. ET: The Santa Fe Animal Shelter and Humane Society announced Meow, t he 39-pound cat from New Mexico who made national headlines in his quest to lose weight, has died.

Credit: Santa Fe Animal Shelter, Ben Swan/AP Photo

"Nightline" recently did a story about obese pets and what owners can do to help their chubby cats and dogs slim down:

12:39 p.m. ET: ABC News/Univision News Town Hall meeting. As part of a new partnership with Univision News, ABC News announces it will provide Spanish language courses to its employees.

Credit: ABC/Dan Milano

11:45 p.m. ET: Kentucky investigators are working with Churchill Downs to view surveillance footage that might provide clues about the mysterious death of a Guatemalan groomer hours after the Kentucky Derby. ABC's Christina Ng has the latest details HERE.

10:45 a.m. ET: "The Avengers," the widely-anticipated Marvel Comics superhero-packed film, smashed the domestic revenue record with a $200.3 million debut on Friday, according to the Associated Press.

ABC's Chris Connolly sat down with the cast for "Nightline" before the film's premiere. Watch it here:

9:32 a.m. ET: ABC News announced this morning that it plans to join forces with Univision News to create a multi-platform news, lifestyle and information programming service aimed at U.S. Hispanics. Read the details HERE.