Colorfully lit drones will be flying in patriotic formations over cities and towns across the U.S. this July 4th as a newfangled alternative to fireworks — particularly in the bone-dry West, where sparks can cause catastrophic wildfires.
Why it matters: Finally, there's an appealing alternative to traditional pyrotechnics, which critics have been hating for years (due to noise, pollution, injuries, and environmental harm).
