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The rollercoaster has been sending our hearts racing and stomachs dropping for over a century, and today, millions of us get our kicks on these topsy-turvy, daredevil joyriders. Hannah gets the inside story on the UK’s newest, tallest and fastest rollercoaster – Thorpe Park’s Hyperia. She uncovers the wild origins of the modern-day coaster and finds out how some dodgy French physics in the 19th century, Nasa rocket scientists and an ambitious cartoonist called Walt delivered the ultimate thrill machine.