Witness dramatic reunions of people whose lives crossed at pivotal moments. Each episode introduces us to two people who were affected by momentous events in American history. We follow them on a journey of detection as they look for a long-lost friend, family member or significant stranger.

Explore the impact of A.I. and how it is transforming the way we live and work — both now and in the future, featuring some of the brightest minds in science, philosophy, technology, engineering, medicine, futurism, entertainment and the arts to tell the dynamic story of A.I.

Nightline, or ABC News Nightline, is a late-night news program that is broadcast by ABC in the United States, and has a franchised formula to other networks and stations elsewhere in the world. Created by Roone Arledge, the program featured Ted Koppel as its main anchor from March 1980 until his retirement from the program in November 2005. Nightline airs weeknights at 12:37 a.m. Eastern Time, after Jimmy Kimmel Live!. It previously ran for 31 minutes, but in 2011, the program was reduced to 25 minutes. When the program moved to 12:37 a.m. ET, the program was expanded to 30 minutes.

In 2002, Nightline was ranked 23rd on TV Guide’s 50 Greatest TV Shows of All Time.

This docuseries follows English soccer club Sunderland through the 2017-18 season as they try to bounce back after relegation from the Premier League.

The real-life adventures of a high-altitude helicopter rescue team patrolling Mount Everest are followed in this series, which begins with life and limb being risked to extract two separate injured climbers, both from 21,000 feet. Also: The ARS team provide emergency medical relief to a local boy suffering from a potentially fatal condition.

Dig into the hidden side of organized crime, including hardcore gangs, fanatical religious groups, shady cults, esoteric societies and criminal fraternities – all of them seeking to gain control of our world.

An innovative, fun, and exploratory factual series that addresses the state of the nation’s health, the latest in medical treatments and the future of healthcare as we know it.

Explore the intimate lives of some of today’s most notable personalities. The 10-episode semi-autobiographical series gives unprecedented access to stars including Tiffany Haddish, LaLa Anthony, Tamar Braxton, Charlemagne Da God, Le’Andria Johnson, NeNe Leakes, Nia Long, Rick Ross and Snoop Dogg as they personally reveal their own stories, in their own words, in the places where their stories unfolded.

Documentary series exploring three aspects of the sex industry in the UK – porn, escorts working from their own homes and prostitutes working on the streets. Not for the faint-hearted.

Professor Brian Cox explores the dramatic lives of the eight majestic planets/worlds that make up our solar system.

With unparalleled and intimate access, this four-part series follows Manchester’s murder detectives over the course of a year as they try to unravel complex cases in dramatic real time.

What does it take to build a house totally off the grid in some of the most unforgiving terrain on the planet? We follow a cast of characters who set out to construct three incredible cabins in the obscure Alaskan wilderness. With no roads and no building supply centers, they’ll have to get creative in a new season of Building Alaska.