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The team decide to buy second-hand lorries to find out how easy it is to be an HGV driver.
The team travel to the US to take three new generation muscle cars on an epic road trip.
The team try to make a second-hand car lap the test track as fast as a new sports saloon.
Can the boys get from Switzerland to North West England on one tank of petrol?
Tha £5,000 aig na preseantairean airson càr nas aosta a cheannach.
James test drives the world's most luxurious car: the Rolls Royce Phantom Drophead Coupe.
The Nissan GT-R is given a thorough work out around Japan's legendary Fuji circuit.
Richard Hammond celebrates the 40th birthday of the iconic Ferrari Daytona.
The adventurers compete in a punishing race up a mountain in the shadow of Everest.
In southern Ethiopia, the lads take on the deadly sport of Suri stick-fighting.
In Burkina Faso, the contestants take part in a brutal inter-village wrestling contest.
The lads are in a very rainy central Brazil to race canoes against the Wauja tribe.
The life story of Titus - a silverback living in Rwanda's Virunga Mountains.
Two-part special in which Horizon considers where the line between sanity and madness lies
The athletes are in Bhutan to learn the national sport of archery.
The marine experts carry out pioneering science on the 20-metre-long sperm whale.
Mark Meakin attempts to unravel the mysterious wanderings of the biggest fish in the sea.
The athletes are in Kamchatka in Asia to take on Koriyak nomads in an endurance race.
Second part of the documentary considering where the line between sanity and madness lies.