Disc.Science

Rob Nelson investigates mysterious tunnels under Denver's airport. Plus, in Ohio he tries to uncover the secrets of a giant serpent-shaped mound.

How do they build massive tunnels to prevent blackouts in one of the world's biggest cities? How do they turn pine forest into perfect pieces of timber.

How do they make the favourite sweet of the Ottomans, James Bond's gyroplane and the Supercat- the world's fastest ferry.

The time travelling machines of Hollywood movies offer infinite opportunities, but could time travel ever really be more than science fiction.

Some of the brightest minds and theorists on the planet explore the limits of human knowledge and explain the science behind the rules of the universe.

Earth is spinning on a tilted axis as it orbits around the Sun. Experts and scientists explain how the planet journeys through the Milky Way.

Danny Forster travels to Belgrade to see how the Sava River Bridge, the world's largest single pylon cable-stayed bridge, is progressing.

Azerbaijan is reinventing itself after decades as part of the Soviet Union. Danny Forster goes behind the scenes of Baku's construction projects.

At an ancient city lost in the Peruvian desert for 5,000 years, experts find signs of strange rituals. Was it the first civilization of the Americas.

The New Secrets. The Statue of Liberty is the home to dark American mysteries. Now, experts are using the latest science and technology to reveal her secrets.

Astronomers detect a potentially habitable planet tantalizingly close to Earth. A chance discovery at NASA reveals a top secret military space program.

Two cosmonauts fight for their lives, trapped inside a capsule in a frozen lake. NASA astronomers are spooked when the full moon affects their experiments.

Did Earth Have Two Moons? A starling discovery suggests the hellish clouds of Venus may be the origin of life on Earth. Plus, did the earth once have two moons.

How do they take the world's sharpest photos, stitch an airbag to catch a falling car, and produce billions of perfectly-formed jelly beans.

How do they build a caravan, forge tuning forks, resurface an ice rink, and put on the world's biggest light festival.

How do they make the groovy vinyl LP? How do they build the dodgem? How do they make one of the world's oldest pain remedies, tiger balm.

How do they forge the axe? How do they put together a courier's messenger bag, and how are the fastest lifeboats built.

How do they make Wensleydale cheese, turn pig hair into paintbrushes, and distil aromatic oils from eucalyptus.

How do they build the world's fastest electric car, turn horses' tails into fine fabrics, and clean the largest swimming pools in the world.

After Aron's successful test of his Death Ray, Jack focuses on Tesla's potential murder. The first suspect takes him overseas to Serbia to look for clues.

The team travels to Serbia, Tesla's homeland, and discovers unseen documents drawn by Tesla himself. Meanwhile, the Death Ray build moves ahead.

Paramedics treat a diver who is experiencing symptoms of decompression sickness. And, a 60-year-old man needs help after a nasty fall.