In some places, swarms of drones have replaced Fourth of July fireworks

Traditional Fourth of July fireworks displays are being replaced by large swarms of small drones with colored lights. It reduces wildfire risk, pollution and loud noises.

AILSA CHANG, HOST:

Big fireworks displays are a staple for many Fourth of July celebrations, but a hotter and drier climate in the West is making it too dangerous to set them off. So more places are now switching to a less flammable alternative. Colorado Public Radio’s Matt Bloom has more.

GRAHAM HILL: Connected. They’re looking good. OK. I’ll check the preflight there.

MATT BLOOM, BYLINE: Graham Hill is sitting at a computer overlooking a big

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