Online mapping - we find out how it can help humanitarian work around the world. Alasdair Keane tries on virtual reality goggles that are teaching students how to solve real-world problems. Meet the teams racing on water with battery-powered boats. And a professor wins a prize for an energy-saving invention he dreamed up in 1977.
Presenter: Alasdair Keane Producer: Tom Quinn
(Photo: An online map is displayed on a laptop screen. Credit: AndreyPopov/Getty Images)
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