Journey through the long-vanished corners of prehistoric North America, beginning when man first entered the vast, unspoiled continent some 14,000 years ago, in this appealing BBC documentary. Witness ancient beasts, mammoths, mastodons, giant bears, and sabre-toothed cats, and see the legacies each has passed to their modern successors. Computer animation and digital effects bring to life mammoths, saber-toothed cats, giant ground sloths, short-faced bears, glyptodonts, and a plethora of smaller animals in a lush Ice Age mosaic. Discoveries from sites across America are the basis for the reconstructions.

Professor Brian Cox takes on the story of the force that sculpts the entire universe - gravity. Gravity seems so familiar, and yet it is one of the strangest and most surprising forces in the universe. Starting with a zero gravity flight, Brian experiences the feeling of total weightlessness, and considers how much of an effect gravity has had on the world around us. But gravity also acts over much greater distances. It is the great orchestrator of the cosmos. It dictates our orbit around the sun, our relationship with the other planets in our solar system, and even the way in which our solar system orbits our galaxy. Yet the paradox of gravity is that it is actually a relatively weak force. Brian takes a face distorting trip in a centrifuge to explain how it is that gravity achieves its great power, before looking at the role it plays in one of the most extraordinary phenomena in the universe - a neutron star. Although it is just a few kilometres across, it is so dense that its gravity is 100, 000 million times as strong as on Earth. Over the centuries our quest to understand gravity has allowed us to understand some of the true wonders of the universe, and Brian reveals that it is scientists' continuing search for answers that inspires his own sense of wonder.

Titanic 100 Years combines stunning imagery of the wreck with powerful untold stories of passengers and crew, letting audiences experience the real life drama of Titanic in a way never before possible. In 2010, an unprecedented expedition by Woods Hole Oceanographic Institute and RMS Titanic, Inc. went on location to document the entire wreck site of Titanic, using high-resolution optical video, sonar, acoustic imaging, and 3D HD video and acoustic modeling.
These incredible visuals are accompanied by the untold stories of people who were on the ship and linked with one or more recovered artifacts that connect to that passenger or crewmember. These haunting artifacts and unforgettable personal stories of average people take viewers back in time, making the history of Titanic as vivid as it was yesterday.

In 1995, during the making of his TV series Triumph of the Nerds about the birth of the PC, Bob Cringely did a memorable hour-long interview with Steve Jobs. It was 10 years since Jobs had left Apple following a bruising struggle with John Sculley, the CEO he had brought into the company. At the time of the interview Jobs was running NeXT, the niche computer company he had founded after leaving Apple. During the interview, Jobs was at his charismatic best - witty, outspoken, visionary. In the end, only a part of the interview was used in the series and the rest was thought lost. But recently a VHS copy was found in the series director's garage. Now, cleaned up with modern technology, and put into context by Cringely.

This episode tells the story of how the Emperor Constantine brought Christianity to the western world. In AD 312, Rome was in crisis. The empire had been divided into four parts, each with its own emperor who fought one another. Constantine intervened and united Rome, using military might and a new religion - Christianity.

D-Day: As It Happens is a 24-hour history event to be broadcast across TV, web, mobile devices and social media, telling the story of this pivotal event in 20th-century history in a completely new way. Using newly-analysed archive footage, viewers can track the progress of seven people who were there on the day, each of them a real participant in the 1944 invasion. And they can do so moment by moment in real time, encountering the twists and turns of the fighting at the same time as the D-Day seven did, and learning their fate as the action unfolds in parallel with the present, Narrated by Peter Snow, with Channel 4 presenter and former marine Arthur Williams, and experts including former British Army officer Colonel Tim Collins and front-line journalist Lorna Ward. The second programme reveals what happened to the seven real people the event is following in real time, and also rounds up the events of D-Day.