Scientists eye YouTube cave videos to track water levels

A spot outside Riyadh for city residents who want to cool off is enabling scientists to do more than enjoy the beauty of their surroundings; they are using YouTube videos to track its rising water levels. Jonathan Amos, BBC science correspondent, reported on Wednesday that scientists are using YouTube graffiti videos (examples of graffiti disappearing beneath rising waters) to track water at the Dahl Hith "spectacular" cave just outside of the Saudi Arabian capital.

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