Justin climbs on top of a stadium roof that is held up by air and in danger of collapse. Plus, Jimena Gascon discovers why Mexico City's Metro project…

Justin uncovers the truth behind a landslide that wiped out a ski-jump resort in Turkey, before jetting off to Gibraltar to see an airport runway built across a…

Would you ever believe a skyscraper can melt a car? Justin heads to London's Walkie Talkie building to unearth the science behind this building blunder.