Earth may seem like the most hospitable planet in the solar system. But look again. Startling new discoveries reveal the blue planet has been plagued by more chaos and destruction than scientists once imagined. Stand on the Earth billions of years ago as a primitive planet called Theia slams into it. Shiver as our entire globe is frozen over like a gigantic snowball. Feel the heat as mammoth volcanoes scorch the landscape and darken the sky. From a cosmic gamma ray burst frying away the ozone layer to an Everest-size asteroid slamming into the ocean, we'll reveal new information about how these unparalleled events drove life to the brink of total extinction. Out of this continuous devastation, how has our planet--and life--got to where it is today? Are the worst days behind us--or lurking in the distant future?

Since the dawn of civilization, humans have wondered who or what created the universe. Religion offers a spiritual answer, but do the latest discoveries in physics show evidence of a transcendent intelligence, or simply that the laws of physics by themselves could have led to the universe in which we live? This episode embarks on a mind-bending scientific search for God, asking physicists and theologians if the seemingly miraculous way the universe has been calibrated to support life is evidence of a creator...whether string theory will eventually be able to rule out the existence of God...why Stephen Hawking says the universe could have been created spontaneously...and how an advanced civilization in another universe could have conceivably created our own.

Many argue that flying saucers and other extra-terrestrial space ships continuously visit the earth. If that were true, what kinds of technologies would such alien spacecraft require? And do eyewitness reports of UFO sightings jibe with modern theories of how interstellar travel might be possible? Authors, astronomers and theoretical physicists weigh in with the blueprints for inertia-canceling devices, nuclear-powered craft, antimatter propulsion systems and even warp drives. Based on Einstein's theories and countless scientific studies, we'll find out how these visitors might bridge the vast distances between the stars. And if they could survive such hazardous journeys, are they flesh and blood or intelligent machines?

By vividly recounting the TT's legendary rivalries and the Isle of Man's unique road racing history, this 3D feature documentary will discover why modern TT riders still risk their lives to win the world's most dangerous race. The Isle of Man Tourist Trophy is the greatest motorcycle road race in the world, the ultimate challenge for rider and machine. It has always called for a commitment far beyond any other racing event, and many have made the ultimate sacrifice in their quest for victory. A story about freedom of choice, the strength of human spirit and the will to win. It's also an examination of what motivates those rare few, this elite band of brothers who risk everything to win.

The setting alternates between prehistory and modern day times in which scientists study the fossilized remains of the creatures in the film. In 2009, a group of paleontologists discover a rare fossil in Kansas. The fossil was previously exposed by a summer rain, and it appears to be a marine reptile, tracing back over 70 million years. It was a female Dolichorhynchops and will be the inspiration for telling the story of Dolly, who travels the Kansas Inland Sea, 80 million years ago during the late Cretaceous period with her family.
The film brings to life some of the most bizarre, ferocious and fascinating creatures to ever inhabit the ocean, incluing Tylosaurus, Xiphactinus, Cretoxyrhina, and Ammonite. It combines animation with recreations in a 3D prehistoric adventure. A journey to the bottom of the ancient oceans dramatizes awe-inspiring creatures.

Roses are red, violets are blue but according to the latest understanding these colours are really an illusion. One that you create yourself. Horizon reveals a surprising truth about how we all see the world. You may think a rose is red, the sky is blue and the grass is green, but it now seems that the colours you see may not always be the same as the colours I see. Your age, sex and even mood can affect how you experience colours. Scientists have unlocked the hidden power that colours can have over your life - how red can make you a winner, how blue makes time speed up. Watch an experiment where for people in a blue pod, a minute lasts 11 seconds shorter.