Graphic detail | A lot of buzz

Drones spotted on America’s east coast highlight a bigger problem

Unidentified objects can be dangerous, but not in the ways you might think

THEY APPEAR at night. For the past month, people living near America’s east coast have excitedly reported sightings of mysterious objects in the night sky: some flash bright, colourful lights and move erratically through the air. They can hover for hours, sometimes appearing in groups. It smacks of a Hollywood film. The truth is probably quite boring—but unidentified objects can still wreak havoc in the sky.

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