Which gas, produced by anaerobic bacteria in waterlogged soils, gives marshes their characteristic bubbling and was historically called 'marsh gas'?
Across the wetlands of the Norfolk Broads and Scottish peat bogs, a colourless, odourless gas slowly bubbles up from decomposing organic matter. It has a long history in British science, having been first identified in the 18th century.
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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?
π History Β· 26 votes
Which British inventor created the first successful mechanical television system, giving a public demonstration in London in 1926?
π History Β· 26 votes
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?
πΏ Nature & Animals Β· 25 votes
