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Seismologists study North Korean nuclear Test

Seismologists turn detectives to study the North Korea underground nuclear test this week

North Korea has carried out an underground nuclear weapons test and scientists hope seismic sensors will tell them more about it. How collision-avoidance technology will help design an almost uncrashable car. New radar images of the unusal near-Earth asteroid 1999 KW4 reveal it to be a binary system. Plus, exploring superstring theory with a violin.

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26 minutes

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大象传媒 World Service Archive

This programme was restored as part of the World Service archive project

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