MTG 2.0 – Correspondent Lesley Stahl sits down with political lightning rod Rep. Marjorie Taylor Greene in her first interview since abruptly announcing her resignation from Congress. Back in Greene's Georgia district, Stahl talks with the longtime Donald Trump loyalist about her fractured relationship with the president, the state of the America First movement, and whether Greene's reinvention is a genuine evolution or a strategic reset that positions her for a post-Trump world. Denise Schrier Cetta is the producer.

Character AI – Amid growing concerns about artificial intelligence's impact on young people and a surge of child-safety lawsuits, correspondent Sharyn Alfonsi investigates the next frontier: AI chatbots. She speaks with parents who lost their daughter to suicide, who say chatbots on the popular platform Character AI led her down a dark and sexually explicit path. She also hears from researchers and a psychologist who further reveal the scale – and dangers – of what's unfolding inside this rapidly growing AI technology. Ashley Velie is the producer.

Watch Valley – Correspondent Jon Wertheim travels to Switzerland's Vallée de Joux – known as "Watch Valley" – where top brands have been refining the art of mechanical watchmaking for centuries. It's a curious time for luxury timepieces, which run – not on batteries – but on springs and gears, as the industry navigates the smartphone era and the ups and downs of President Trump's tariffs. Wertheim meets watchmakers and brand leaders and gets an up-close look at what keeps these mechanical wonders ticking. Nathalie Sommer is the producer.

The Sherpas of Everest – Correspondent Cecilia Vega journeys to the Himalayas for the adventure of a lifetime – trekking to Everest Base Camp at the foot of the world's tallest mountain, Mount Everest. Guiding her is 19-year-old Nima Rinji Sherpa, the youngest person to summit all 14 of the world's highest peaks. He embodies a new generation of Nepali climbers demanding recognition on the global stage. This is a double-length segment. Jacqueline Williams is the producer.

Presenting the Kanneh-Masons – Correspondent Jon Wertheim travels to Nottingham, England, to visit the Kanneh-Mason family—seven siblings, each still under 30, all celebrated classical musicians whose talent is truly music to the ears. Supporting one another in harmony as they record chart-topping albums and take to the world's stage, this extraordinary septet, as Wertheim discovers, is an orchestra greater than the sum of its parts. David M. Levine is the producer.