Quest HD

The Opalton Boulder Crew need to find a new source of boulder opal, the Mooka Boys are gambling their season on a rented digger to get through cap rock, and Slim Pickings are trying to stay dry after floods washed out their mine site.

Mike Elliot races against rising floodwaters, Jim Foody contends with broken roads and breakdowns, and the Haighs transport massive cargo through the rugged outback.

Jeremy Wade takes a fresh look at the Battle of Actium; Jeremy investigates what could be the first recorded case of a whale rescuing a human.

Jeremy Wade follows investigators as they dive the wreck of the ferry, MS Estonia; the case of America's notorious skyjacker, D. B. Cooper, takes an intriguing underwater twist.

Witnesses photograph two suns in the sky over Indonesia - is this the first sighting of the Sun's dark twin that could spell imminent danger to Earth?

A look at the engineering processes behind ceramic fireplaces, synthetic corks and parking garage floor slabs.

Examines how items such as oil pressure sensors, large format printing, heavy equipment simulators, and head and neck restraints are made.

Presenting the latest products live on television that can be ordered directly. The product range extends from vacuum cleaners and bath towels to sports equipment.

Presenting the latest products live on television that can be ordered directly. The product range extends from vacuum cleaners and bath towels to sports equipment.