Delivery Drones

Amazing Invention- This Drone Will Change Everything
Mark Rober

This guy is a little too bouncy and cheerful for my taste, but he brings some good info to the party, so I'll let him slide. He talks about two different delivery drones being built by Zipline. One kind is a quadcopter  that delivers packages to your backyard by lowering them on cable. The other is more like an airplane. This one is being used to deliver packages, including emergency medical supplies. They are doing this in, of all places, Rwanda. Rwanda? The country with a zillion dead Hutu and Tutsi? Apparently things have changed and Rwanda is now a relatively prosperous country. The BBC has a decent summary. Wikipedia has a very long and very tedious article. I read a couple of pages before I gave up.