Images of earth from space reveal an intimate portrait of human activity. Cities glow bright while the wilderness remains dark. Why then is the Australian outback, lit up like a series of vast cities?

What would happen if we got a message from space? How would we react? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact of this world changing event, forming an intriguing hypothetical scenario

How will humans react when an alien spacecraft is on its way to Earth? Will humans learn from aliens, or become colonial subjects? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact.

The Arrival has ended. A swarm of small spacecraft depart their huge mothership, and hover in our atmosphere. The ships open their hatches, and deposit thousands of mysterious pods on the earth’s surface. Are they a message, a gift or a weapon?

A mothership the size of Texas is hovering over Earth and we're tired of waiting. We send a rover to explore, and what we find makes us question the definition of life. On Earth, the pods multiply, making contact with them unavoidable.

Astronauts train for weightlessness and fire fighters battle forest fires.

Experts reveal how regular cars are modified to race on dangerous circuits.

The crew of a nuclear submarine reveal how they stay safe during a fire.

Massive mining machines are made to be mobile.

Investigators show how they analyze the data stored on a plane's black box.g

Turbine blades are manufactured for massive jet engines.

Discover how aluminum foil, snowboards, contact lenses and bread are made.

Discover how compact discs, mozzarella cheese and pantyhose are made.

Discover how toothpicks, acrylic bathtubs, helicopters and beer are made.

Discover how hearing aids, 3D puzzles, rubber mats and toilets are made.

Discover how copy paper, jeans, computers and plate glass are made.