If you've used a vending machine lately, you've probably noticed that they're pretty high-tech now, but this invention was ...

Heron of Alexandria is said to have invented the first vending machine in the 1st century AD. So, how did this contraption work, and what did it dispense?

The humble vending machine has long been a mainstay of shopping on the go. The most popular kinds sell drinks or snacks, but you can also find vending machines offering everything from ice cream and ...