Using public Wi-Fi requires a lot of patience. Different devices have to share the bandwidth from a router, and that can slow downloads to a crawl. Now, a research group in the Netherlands is proposing to increase wireless capacity by orders of magnitude by using infrared light instead of radio waves.
Researchers have long been trying to make electronics that are safe to eat. These include edible transistors, sensors, batteries, electrodes, and capacitors, which (if you put them together) are most of an edible robot.