The average shower lasts 8 minutes - using 62 litres of hot water, compared with an average bath’s 80 litres.
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To make seawater fit for human consumption its salt content of approximately 3.5% must be cut to 0.05% or less.
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The average flight in European airspace is 50 km (31 miles) longer than it need be - largely due to primitive air-traffic management (ATM) systems.
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The average hurricane generates energy roughly equivalent to 400 20-megaton bombs exploding in one day — the equivalent of all the electrical energy used in the U.S. for six months.
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The average American home has 42 light sockets compared with about 15 in China.
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