Balloon Cars: Create simple balloon-powered cars using straws, bottle caps, and balloons. Kids can experiment with different balloon sizes and shapes to see how air resistance affects the car’s speed. In addition, you can set up balloon rockets! Flying Kites: Make a DIY kite! Fly kites on...
Google says that balloons make sense for this purpose — they're cheap to deploy and can provide wireless coverage in areas that would otherwise be difficult to serve due to geography. Like Google’s driverless cars, Project Loon is very much an experiment that’s in “very early days....