Scott Pelley reports on the 2013 sarin gas attack in Syria that U.S. intelligence estimates killed more than 1,400 civilians. Source

More than 80,000 country music fans are expected to jam AT&T Stadium near Dallas for the 50th Academy of Country Music Awards. Source

Bob Petrella can remember virtually every day of his life — and a half century of one of college basketball’s greatest teams. Why haven’t you heard of them? Lesley Stahl reports. Source

Dear Readers: the Duke of Hastings will sadly not be reprising his role for Season 2. Source

Aspirin is known to help reduce the risk of heart disease, but now a new study says long-term, regular aspirin use can substantially cut the risk of some kinds of cancer. New York Presbyterian-Weill Cornell Medical Center’s Dr. Heather Yeo tells us more. Source

Since bursting into public consciousness (and onto tabloid pages) as the star of the “Twilight” franchise, Kristen Stewart has come under critical fire. “Sunday Morning” film critic David Edelstein disagrees, and with her latest role in “Clouds of Sils Maria,” offers praise for the young actress’ astonishing career. Source

“Orange Is the New Black” star Kate Mulgrew has played many strong characters in her time, but in writing her new memoir, “Born With Teeth,” she opens up about some painful subjects, including her choice to give her firstborn child up for adoption. Anthony Mason sits down with Mulgrew to hear about the actress’ search to find her daughter. Source

Web extra: The Oscar-winning star of “Gladiator” and “A Beautiful Mind,” and the star-director of “The Water Diviner,” talks to Seth Doane about collaboration on a film set and the never-predictable sense of when a movie succeeds or fails. Source

Preview: The Oscar-winner talks to Seth Doane about the fascination of acting, and about the job he enjoyed even more. Source

Actress and singer Rita Wilson revealed that she is recovering from a double mastectomy. The wife of Tom Hanks says a second opinion helped spot her breast cancer early. Doctors Jon LaPook and Holly Phillips join “CBS This Morning: Saturday” to tell us more. Source