The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
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The first guy to win Who Wants To Be A Millionaire (USA) used none of his lifelines until the final question, where he called his dad. During the call, he told his dad he didn't need any help on the final question, but he just wanted to let him know that he was about to win $1,000,000.
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Cuban rescue workers use sniffer rabbits to find people in collapsed buildings.
10
‘Fracture putty’ is a material being developed that when packed in & around a bone fracture, provides full load bearing strength within days.
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