John Lennon and Yoko Ono's peace efforts and philanthropy are examined in new documentary "One to One," about Lennon's only full post-Beatles concert.

John Lennon (left) and Yoko Ono making music in New York in the early '70s, when they became involved with radical activism. "My parents ultimately felt they were in danger," Sean Lennon says.

To John’s mind, there is a new urgency in the air. “Young people are apathetic,” he cautions. “They think there is nothing worthwhile to do, and everything is finished.

How John Lennon's Accidental LSD Trip During a Beatles Recording Session Strengthened His Bond with Paul McCartney 'John & Paul,' a new book by journalist Ian Leslie, explores the intricacies of ...

His new book, “John & Paul: A Love Story in Songs,” is, astonishingly, one of the few to offer a detailed narrative of John Lennon and Paul McCartney’s partnership. And it’s a revelation.

Meanwhile, others reason the change in Lennon's voice might just be a natural part of aging. They wrote: "John is my favorite vocalist. His early vocals were incredible.

John Lennon and Yoko Ono’s son Sean Ono Lennon gave rare insight into his unique upbringing, calling his parents “ahead of their time” for documenting their private life.

John Lennon (left) and Yoko Ono making music in New York in the early '70s, when they became involved with radical activism. "My parents ultimately felt they were in danger," Sean Lennon says.