In a few weeks, scientists from across the world will gather in the New Mexico desert to compete for one of the strangest - and most ambitious - technological competitions ever devised.
Some researchers will unveil robots, powered by solar panels, that will climb long lengths of cable. Others will demonstrate materials so light and strong that mile-long stretches of the stuff could be hung in the air without snapping. And some will highlight their plans to launch satellites carrying sets of mini-probes tethered together, to discover how they behave in space.
All these different projects are united by one extraordinary goal: to build a stairway to heaven...
One day you'll ask: Where were you, when they built that ladder to heaven?