Jean-Jacques d'Ortous de Mairan

Internal Circadian Clock November 26, 1678   Today is the birthday of the French geophysicist, astronomer, and most notably, chronobiologist Jean-Jacques d’Ortous de Mairan. Mairan’s job as a chronobiologist is a job one rarely hears about these days. In 1729, Mairan put together an experiment showing the existence of a circadian rhythm in plants. Mairan…

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20200101 The Daily Gardener Album Cover

Today we celebrate the man who discovered that plants have circadian rhythms. We’ll learn about the 20-acre estate that had the very first lawn mowed by a lawnmower in the United States. We’ll hear some truly lovely and a little melancholy poetry about November.  We Grow That Garden Library with a book about the official national tree…

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Jean-Jacques d'Ortous de Mairan

Chronobiology for the Circadian Clock Today is the birthday of Jean-Jacques d’Ortous de Mairan, who was born on this day in 1678.   Mairan was a French chronobiologist – a job one rarely hears about these days. In 1729, da Mairan put together an experiment showing the existence of a circadian rhythm in plants. Essentially, he…

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