Specially shot microscopy footage reveals the hidden world of twin fetal development.
(01:34)Tesla Motors founder Elon Musk is out to create the world's first manufacturing plant for the fully electric car.
(02:55)Thai Police raid a suspected hideout of an Uzbek Human Trafficking gang.
(03:00)Explore the secrets in the building of the crowning glory of Hagia Sophia, a dome 56 metres high and 31 metres across. Find...
(04:58)The world changed when two hijacked airliners crashed into the Twin Towers. We look at the events leading up to it and ask why...
(01:45)Crack maker, Baby Doh, shows how he turns regular cocaine into crack.
(02:00)A womb with a view. Was it cameras, models or CGI? The production team and scientific experts uncover the show's secrets.
(03:04)With no wetsuits, these divers swim freely in shark-infested waters.
(02:05)An in-depth look at the Petronus Twin Towers; the world’s tallest towers stand an amazing 1483ft above Kuala Lumpur.
(01:01)Russia’s most brutal criminals are kept in Black Dolphin Prison.
(02:38)Enter the world’s greenest pavilion, built with 1.5 million recycled plastic drink bottles. It’s green, but is it...
(02:41)Who says treadmills are only for exercise when you can use them in so many creative ways?
(01:54)The Christina is reeling in a humongous fish - but can they hang on long enough to haul it into the boat?
(01:04)The Hard Merchandise tries to make a good catch at Georges Bank with a beast of a tuna.
(02:31)With its oil reserves dwindling, Dubai switches its sights to tourism, building the Burj al Arab, a 60-storey hotel in the...
(00:38)Zara Whittaker's friend tells her how 'easy' it is to become a drug smuggler...
(01:38)Fear and suspicion lead to violent witch-hunts across Europe. Torture was used to gain confessions.
(02:44)Fighting cervical cancer and fibromyalgia, Juliet uses a vaporiser to treat her pain with cannabis.
(02:56)The ancient lost city of Petra is a magnificent sight – find out how it was discovered in the eighteenth century and why it...
(02:28)The task force carries out an undercover operation in the red light district of Pattaya.
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