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EntertainmentScientists explain why we hiccup
Scientists from University College London have revealed why we hiccup and why this annoying habit is so important - especially for children.
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Why are diesel engines not used in small cars?
Why does every lock have a 'mysterious' small hole at the bottom?
Why is Mount Everest so attractive to so many people?
Why will the Earth never be 'swallowed' if one day the Sun turns into a black hole?
Record selling price for the gold watch of the richest passenger on the Titanic
Humans' heat tolerance limit is not as high as we think
Atomic clocks are off by only 300 trillionths of a second every day
China wants to bring Mars samples before the US
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