The Advent Calendar Turns The Month Of December Into A Christmas Countdown

If you’re doing an Advent calendar this month, you’re just over halfway finished opening up those little windows to see what’s inside. So let’s open up a few windows into where they came from. Plus: engineering students at ETH Zurich are trying to build robots that can drop little presents down scale model chimneys. Advent calendars, explained: Where they came from and why they're everywhere now (NPR) Robots help deliver gifts (ETH Zurich)Backing our show on Patreon is like giving a gift to yourself