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The production of accordions, pineapples and artificial joints, and how technology has influenced their development

The production of giant valves, tinned sardines, barographs and disposable nappies, and how technological progress has altered their manufacture

Pete Nelson builds a treetop fortress for a couple who loves all things medieval. Features include a high tower with a round table and thrones, and a loft with a glass floor

A couple dreams of a treehouse that will recapture mountain vistas, so Pete Nelson creates a bungalow with large windows to take in a view that was once lost

Dakota Fred and his son Dustin risk their lives to find a fortune in gold nuggets, taking them deep beneath the waters of one of Alaska's wildest creeks

Fred opens the door to a new site. After a bust-up with Fred, Kayla makes a discovery that will change the course of their entire season

Robin Johnson teams up with Micaela Sharp to build a gift for a charitable hairdresser. Saf Fakir creates a jewellery box, and Charis Williams works on vinyl record display case

Olympic athlete Tom Bosworth asks Saf Fakir to make a gift for his coach. Charis Williams treats a special canine to a deluxe bed. Robin Johnson makes a storage unit for an artist

Terri, Bindi and Robert prepare Croc One, Steve Irwin's research ship, for a special mission to release an endangered sea turtle back into the wild

Robert follows in his father's steps wrangling Utah, a highly venomous king cobra. A vet from the zoo's hospital, Dr Amber, visits Tandora to care for wild koalas

How to make a bicycle which can fold up to a tenth the size of a regular bike. Plus, the process behind the making of a Borsalino hat worn by Indiana Jones

How to make the Fender Stratocaster electric guitar, and a look at the way Swedish fermented cod roe Kalles caviar is made

A look at the gravity-defying 'magic' behind Pisa's leaning tower. Plus, the making of chocolate digestive biscuits

How ancient Greeks invented parchment with techniques still used today. Plus, the making of shuttlecocks

The race begins to secure food and shelter before the snow arrives, and as Heimo and his family hunt for caribou, a hungry bear stop them in their tracks

Heimo stalks a moose, but has some deadly rivals in a pack of wolves. The Seldens go on a dangerous four-day journey through dangerous conditions

Mike and Elvis try to give a rare Skoda 110R a rally inspired makeover, but they soon discover it's a bigger and more expensive job than they thought

Freddy and Juan rescue their first all-female mining crew, who are plagued by constant shutdowns on Arizona land rich in legendary gold

Josh Gates explores weather-driven mysteries: the Donner Party disappearance, a secret Cold War base in the Arctic, and the ghost ship Mary Celeste.

Follows investigators as they reopen the investigation into the bizarre disappearance of 16-year-old Theresa Bier in 1987. Locals believe Theresa was abducted by Bigfoot

The team heads south to America's most haunted city: Savannah, Georgia. They investigate horrifying reports of violent paranormal activity

A man checked at Arlanda airport is attempting to smuggle a lot of gold. In a car in Kapellskär, Malin discovers hidden puppies

Josh Gates explores weather-driven mysteries: the Donner Party disappearance, a secret Cold War base in the Arctic, and the ghost ship Mary Celeste.

Follows investigators as they reopen the investigation into the bizarre disappearance of 16-year-old Theresa Bier in 1987. Locals believe Theresa was abducted by Bigfoot

Part two of two. Shawn follows old mining evidence, while Kris suffers a catastrophic failure on the All In that threatens to end both his season and mining career

Mark and Digger attempt to make Scotch on a Popcorn Sutton-designed pot still. Amanda joins Mark and Huck in the hills only to find all their copper stolen

Buying goods from home

Buying goods from home

Experts answer more questions about the animal kingdom, including what lions are saying when they roar and what leafcutter ants do with all the leaves they collect

Why domestic cats have trouble getting down from trees and why kiwi birds lay monster-sized eggs compared to their size