Which British inventor patented the vertical-axis water turbine known as the 'reaction turbine' in 1826, an early forerunner of modern hydro turbines?
Long before hydroelectric dams lit up the grid, British engineers were experimenting with clever ways to harness flowing water.
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Which English mathematician and cleric first proposed the reformed grave calendar adopted as the Gregorian in a 1582 treatise submitted to Rome?
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Which UK moth species is famous for having a caterpillar that mimics a twig so precisely it can hold itself rigid at an angle for hours?
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Which British farmyard animal has the most personality?
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