10 Things You Didn't Know About...
BBC FOUR
Wednesday 11 January 2017 20:00 - 21:00 (60 mins)
...Earthquakes. 2/4. Iain Stewart reveals the stories and science behind some dramatic earthquakes, including how 1960s Cold War spying helped scientists understand them. Also in HD. [AD,S]
10 Things You Didn't Know About... may be available on playback
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