New York City's Time Warner Center is the state of the art in high-rise living. It features all the amenities that one can imagine. But high-rise, high-density living isn't a new idea.

The team launches new investigations aided by a fresh wave of exclusive eyewitnesses; these U.S. military veterans testify to a series of encounters between the military and UFOs dating back to the Vietnam War; the team attempts to connect the dots.

This episode examines new interpretations of ancient texts, which indicate that Satan may have been an extraterrestrial being, rather than an immortal force of evil.

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

Deep in the Egyptian sand, Zahi make the extraordinary discovery of five intact burials and, just as he thinks things couldn't get any better, he unearths a brutally murdered mummy.

The Romans, with the greatest army in the world, are annihilated by Germanic tribes at the Battle of Teutoburg Forest. Go inside the culture of some of the most famous warriors to explore their weaponry, tactics and, ultimately, their psyche.

The Universe

A crucible of creation and destruction, with Earth on its edge, the Milky Way is just one galaxy among millions. Discover its complex tapestry of science.

New York City's Time Warner Center is the state of the art in high-rise living. It features all the amenities that one can imagine. But high-rise, high-density living isn't a new idea.

The team launches new investigations aided by a fresh wave of exclusive eyewitnesses; these U.S. military veterans testify to a series of encounters between the military and UFOs dating back to the Vietnam War; the team attempts to connect the dots.

For thousands of years, human civilisation has been guided by the words and deeds of ancient prophets, but who were these prophets communicating with?

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

Deep in the Egyptian sand, Zahi make the extraordinary discovery of five intact burials and, just as he thinks things couldn't get any better, he unearths a brutally murdered mummy.

The Romans, with the greatest army in the world, are annihilated by Germanic tribes at the Battle of Teutoburg Forest. Go inside the culture of some of the most famous warriors to explore their weaponry, tactics and, ultimately, their psyche.

The Universe

A crucible of creation and destruction, with Earth on its edge, the Milky Way is just one galaxy among millions. Discover its complex tapestry of science.

New York City's Time Warner Center is the state of the art in high-rise living. It features all the amenities that one can imagine. But high-rise, high-density living isn't a new idea.

The team launches new investigations aided by a fresh wave of exclusive eyewitnesses; these U.S. military veterans testify to a series of encounters between the military and UFOs dating back to the Vietnam War; the team attempts to connect the dots.

For thousands of years, human civilisation has been guided by the words and deeds of ancient prophets, but who were these prophets communicating with?

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

Deep in the Egyptian sand, Zahi make the extraordinary discovery of five intact burials and, just as he thinks things couldn't get any better, he unearths a brutally murdered mummy.

The Romans, with the greatest army in the world, are annihilated by Germanic tribes at the Battle of Teutoburg Forest. Go inside the culture of some of the most famous warriors to explore their weaponry, tactics and, ultimately, their psyche.

Ross Kemp: Shipwreck Treasure Hunter

Ross tries to find out more about his sea-faring Great Grandfather, Arthur �Pop� Chalmers. He discovers that Pop served in the Merchant Navy and survived three shipwrecks. Inspired to know more, he links up with maritime archaeologist Mallory Haas.

The world today is linked like never before - but throughout history new trade routes and connectivity have opened the way to terrible dangers, too.

Over millions of years mankind has evolved from a puny, vulnerable creature to become a dominant force on the planet. But occasionally the planet bites back.

Host Brad Meltzer and viewers are on the hunt for lost and stolen history, including an historic plaque commemorating Alex Haley's Roots. Plus: an original copy of the Bill of Rights, and a mysterious ring worn by Lee Harvey Oswald.

Brad Meltzers Decoded

Excitement builds when Kevin and the team uncover evidence on the property of a Civil War general that could convince Marty their theory is legitimate.

The ancient ruins of Puma Punku have mystified archaeologists ever since their discovery hundreds of years ago. Is it possible that the ruins of Puma Punku offer evidence of advanced technology being used in the ancient past?

An ancient civilization revered by scientists for their extremely accurate calendars, the Maya are also known for their mysterious ability to predict unsettling events.