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Published online 17 July 2002 | Nature | doi:10.1038/news020715-4

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Microphones tell asteroids from A-bombs

Detecting low frequency rumbles could avert nuclear war.

Free data from a global array of microphones could spot nuclear false alarms, averting disastrous retaliation, say scientists1 and defence experts.

The ground-based network will detect the faint, low-frequency rumbles of meteor explosions high in the atmosphere that can look like nuclear explosions to other sensors.

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