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Can you swim as fast through syrup as you can through water. We check wind speed down at the lab. We find out why you shouldn’t muck around with lawnmowers. Electricity goes on tour. What is Britain’s stickiest fixer. Can you open an umbrella underwa... (more)ter. Do clever people have heavier heads. Is it possible to get drunk without drinking. And carefully does it – by popular demand, we’ve tracked down the most dangerous chemical yet – stand by for Thermite.

James MacKenzie, Paul O'Grady