Discovery Science +1

S1 E5 — World's Longest Railway Tunnel Richard ventures two kilometres beneath the Alps into the world's longest underground railway connection, the Brenner Base Tunnel, and rides some giant machines.

S1 E6 — Super Stadium Richard Hammond goes behind the scenes of Tottenham Hotspur's new groundbreaking football stadium in London, as he explores a pitch that splits and rolls away and takes a terrifying walk on the roof.

S5 E3 — Black Holes: The Secret Origin Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large.

S5 E7 — Life & Death on the Red Planet Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert.

S5 E5 — Stars That Kill Countdown of NASA's top six deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets.

S16 E9 — Tractors, Cowbells How do they build a tractor every three minutes to power Indian agriculture? How do they cast the bronze bells that help Swiss farmers keep track of their cows?

S16 E10 — Bird's Nest Soup; Rowing Oars How do they collect millions of real birds' nests to make birds' nest soup? How do they use aerospace technology to make rowers go faster? And, how are castanets made?

S16 E11 — Turbochargers, Plastic Roads Many items that make up the modern world are the result of sophisticated engineering and production processes. How do they do it?

S16 E12 — Episode 12 Looking at how they harness the wind to power a racing yacht to Olympic gold. Plus, how they make a sword fit for an officer at the world's largest sword factory.

S16 E13 — Guitar Amplifier, Clay Pots Investigating how they make the amplifier used by rock legends, the famous Marshall amp. Plus, how they turn wet clay into frost-proof garden pots.

S16 E14 — Window Cleaners How do they keep the world's tallest twin towers clean? How do they make a jigsaw where every piece is unique? And, how do they craft Olympic level hockey sticks?