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, dare-devil 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.

Britain's 2,300 miles of motorway are the backbone of the country, and without them, it'd probably all grind to a halt.

Hannah takes a drive to the National Highways control centre for the UK's busiest motorway to meet the team that keep these super-roads running 24/7. And she discovers how a mathematician with a passion for wild swimming, a Formula 1 legend and a 1960s road-sign revolution created the modern motorway.