Last Watched

Is Gravity An illusion

   2014    Science
We feel it every moment of our lives but for physicists, gravity is the longest running unsolved mystery of the universe. Why do all objects that have mass pull on one another? Cutting-edge theories are proposing unexpected answers: Gravity could be another force in disguise, a thermodynamic mirage, or even, a shadow of a hidden holographic universe. If so, the force that holds us to the surface of the earth, and holds the earth in orbit around the sun, may be a trick of the mind. We feel it, but it may not be real. Is Gravity an Illusion?
Series: Through the Wormhole Season 5

Is There a Shadow Universe

   2014    Science
When we look up into the sky it appears we live in a universe that is filled with light. But scientists are now certain there is far more matter in the dark portions of our universe that we can’t see or touch. There’s something hiding in the shadows. Cosmologists agree that 'dark matter' has helped shape our Universe, but now they need to figure out what dark matter is. What’s going on in this hidden world? Could it have formed its own dark stars, planets, and even life forms? Could this Shadow Universe threaten our world of light?
Series: Through the Wormhole Season 5

When Did Time Begin

   2014    Science
We float along the river of time. But does that river have a source? Where did time come from? Some believe time and space are one thing, and the Big Bang started the cosmic clock. Others believe the universe existed for almost half a million "years" before light could move and time began. Still others say time is older than our universe. But what if time itself is an illusion? Incredible new experiments may hold the answer. One groundbreaking experiment gives us the power to punch holes in time…and another may create a machine that operates outside time’s boundaries!
Series: Through the Wormhole Season 5

Why Islamic State expands so quickly

   2015    Culture
The self-proclaimed 'Islamic State' is a jihadi militia active in the north and east of Syria, and in the west of Iraq, which has shocked the world with its cinematic staging of horrific acts of violence and its unexpected advances towards statehood. But why could IS expand so rapidly?

The Home

   2014    Nature
To survive, animals need somewhere to live, a place that provides the necessities of life, shelter from the elements and a refuge from enemies. Good homes are rare and competition can be intense – finding a home is one thing, but defending it is quite another.
Series: Life Story

Power

   2014    Nature
An individual’s life journey interweaves with many others. Those who are successful know when to fight or back down, when to cooperate or to go it alone and how to manipulate and deceive. But power is the ultimate prize: animals will use any means to rise through the ranks and win the game of life.
Series: Life Story
The Story of China

The Story of China

2016  History
Long Way Up

Long Way Up

2020  Culture
Bronze Age

Bronze Age

2016  History
The Virtual Revolution

The Virtual Revolution

2010  Technology
The Sky at Night

The Sky at Night

2015  Culture
The Germanic Tribes

The Germanic Tribes

2007  History