Discovery Channel HD Friday

The manufacture of curling stones, refrigerators, aluminium baseball bats and opalescent glass, and how technological advances have altered their production techniques

The manufacturing processes behind surveyors' levels, hot dogs, abrasive grains and sandpaper

Pete Nelson returns to build more spectacular treehouses, beginning with a five-platform structure for a nature preserve in Michigan

Pete creates an owl-inspired treehouse library in North Carolina. Evoking the face of the bird by using curves such as rounded walls, the crew makes a masterpiece

From Alaska's Chilkoot Trail to Australia's nugget-filled Outback, Parker risks his life searching for gold-rich ground and innovative mining techniques

Parker uncovers lost footage from seven years of prospecting remote areas around the world and reveals the best ground he's ever found

A couple faces torrential downpours, earthquakes and dangerous volcanic activity while building an off-the-grid home within the edge of an active volcano on Hawaii's Big Island

A bamboo-home architect builds his own getaway in Hawaii, which features a luxurious outdoor bath area and detached, starlit master bedroom

Forrest Galante helps care for the new arrivals at the wildlife sanctuary of Vantara, including an orphaned rhino, penguins and bears.

Forrest Galante reveals Vantara's care of every animal, from 3D beaks and acupuncture for elephants, to a team helping a cub walk again.

A look at how monorails are built above the world's most crowded streets, and how Copenhagen's famous Flora Danica porcelain is crafted

Investigating how one of the slipperiest substances known to man is used to make waterproof clothing for explorers, mountaineers and special forces soldiers

How oranges are turned into marmalade, and a look at how dresses are printed, fit for the catwalk

Investigating how heavy duty road rollers are built, and revealing how mobile phones are manufactured with the care and precision of a Swiss watch

The Raneys share their family's journey from rural Washington state, across southeast Alaska, before settling on a parcel of land known as 'The 40.'

The Raneys reveal unseen builds and share their most memorable moments from nearly a decade of rescuing and fighting for homesteaders

In Germany, Mike and Elvis are captivated by an E30 M3, their most expensive purchase yet. Will their efforts make this M3 shine enough for buyers?

When golden nuggets mysteriously dry up on a couple's claim in British Columbia, the guys must crack the case: is it the miners or the mine?

The team heads to the site of the bloodiest battle ever on U.S. soil, where witnesses claim to see phantom soldiers roaming the battlefields at night

Andrew Bustamante tests whether we've already crossed the dangerous point of no return where AI can independently manipulate our reality without us knowing it

The team heads to Alaska, America's Last Frontier, to investigate reports of a murderous sasquatch. Phil and Jess have a close encounter with 'The Hairy Man'.'

In Korczowa, a scanner alerts customs officers to a suspicious van. Plus, a sniffer dog helps to uncover contraband and unusual items hidden in a coach

The team heads to the site of the bloodiest battle ever on U.S. soil, where witnesses claim to see phantom soldiers roaming the battlefields at night

Andrew Bustamante tests whether we've already crossed the dangerous point of no return where AI can independently manipulate our reality without us knowing it

Part two of two. At the midpoint of the mining season, tensions run high. Zeke hits a 'cheesy' gold-rich spot, but the rest of the fleet faces new setbacks and foes

Mark and Digger break the sound barrier finishing a run of rye for a Southern Rock customer. Richard makes a Big Easy classic for a demanding New Orleans chef

Buying goods from home

Buying goods from home

High-speed footage reveals how the hummingbird can fly backwards, and a look at the hagfish, which is unlikely to win any underwater beauty contests

What a dog is saying when it wags its tail, and the secret behind a crocodile's powerful jaws - and how to escape it