Guarding a Screpter´d late

Rising water levels are one of the most potent threars posed by global warming. In response Britain has doubled its spending on flood prevention. The most visible evidence of the danger is the Thames Barrier, a set of hulking yet beautiful floodgates that bisect the waterway II miles downriver from central London. When he barrier became operational in 1983, 30 years after the massive flood that spurred its construction, planners expected that in might have to close once or twice a year to keep ocean storm surges from inundating the capital. In tha past decade,however,extreme weather has caused the barrier to be closed an average of I0 times each year.

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