When the ground shakes, scientists need a reliable way to compare events from a minor tremor in Surrey to a massive rupture in the Pacific. The Richter scale, devised in 1935, is now considered outdated for bigger earthquakes.
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Which figure from the history of British science deserves more recognition than they get?
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Which everyday phenomenon did Lord Rayleigh explain in the 1870s, earning him a Nobel Prize years later?
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Rank these Doctor Who actors by the year they first appeared as the Doctor, earliest first.
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