London dry thanks to '80s-era marvel

LONDON, UNITED KINGDOM - JANUARY 07: A general view of the Thames Barrier on January 7, 2014 in London, United Kingdom. After a period of recent storms and heavy rain, forecasters are warning that there is still more bad weather to come over the next few days. (Photo by Dan Kitwood/Getty Images)
LONDON, UNITED KINGDOM - JANUARY 07: A general view of the Thames Barrier on January 7, 2014 in London, United Kingdom. After a period of recent storms and heavy rain, forecasters are warning that there is still more bad weather to come over the next few days. (Photo by Dan Kitwood/Getty Images)

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    London dry thanks to '80s-era marvel

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The Thames Barrier is tasked with protecting London from devastating floods. CNN's Max Foster reports.