Disc.Sci+1

Life & Death On The Red Planet. Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert.

Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets.

Despite Pluto's appearance as a dark and frozen world, scientists are investigating whether there might be warm liquid water beneath the surface.

A storm warning is in effect for Fairbanks, making driving on the treacherous roads even more dangerous. The recovery teams prepare for emergencies.

Warm weather has arrived in Fairbanks and people are taking advantage of it. But the recovery teams know that a rise in temperature does not guarantee safety on the roads.

Rob Nelson investigates the mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge. Plus, the search for escape tunnels in Alcatraz.

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

Earth's past is marked by one cosmic disaster after another, forging the path of human evolution. Experts explore how close the Earth has come to destruction.

Experts explore the most astonishing discoveries of the Voyager spacecraft. They examine how the operation has transformed into the ultimate mission.

The mysterious dark matter is thought to be the cosmic glue that holds the universe together, yet the search for it continues to puzzle scientists.

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.

How do they feed France's appetite for snails, turn slabs of steel into shiny cutlery, and craft a kayak you can paddle with your feet.

How do they build emergency bridges that can take the weight of a tank, make a marker pen that never fades, and design a 200-mph superbike.

Confidential CIA files reveal a secret war for space between America and the Soviets. And, experts investigate American espionage during the Apollo programme.

Experts investigate the Lunar Landing Research Vehicle that nearly killed Neil Armstrong during training. Some believe this proves why the moon landing is fake.