Around the world, thousands of people are using a special kind of bank. Instead of using it to save and spend money, they’re using it to save and spend time. Based on the idea that everyone’s time is worth the same, time bankers exchange lawn mowing for childcare, and dog walking for graphic design. World Hacks reporter Tom Colls enters the time economy and looks at the projects trying to upgrade time banking for the digital age. Presenter: Nick Holland Reporter: Tom Colls Photo Caption: Clock and piggy bank. Photo Credit: Getty Images