Next stop space: Japanese company constructing nanotube 'space lift'

In this edition, we tell you more about the race to build the world's first space elevator. The idea is to create a 100,000-kilometre-long nanotube stretching from Earth to space that we could climb into. It would be a much cheaper way to explore the universe. And in Test 24, we try the AnatoScope, a scanner that can automatically build a 3D advanced model of a patient's anatomy in just one minute.