The year 1670 in science and technology involved some significant events.
Botany John Ray publishes Catalogus plantarum Angliæ, the basis of all later floras of England. The predecessor of the Royal Botanic Garden Edinburgh is opened as a physic garden by Drs Robert Sibbald and Andrew Balfour in Holyrood, Edinburgh, Scotland.
Earth sciences Jean Picard calculates the Earth radius to within 0.44% of the modern value. Agostino Scilla publishes ("Vain Speculation Undeceived by Sense") in Naples, arguing for an organic origin for fossils.
Technology The first longcase clock is built in England by William Clement.
Births February 25 – Maria Margarethe Kirch born Winckelmann, German astronomer (died 1720)
Deaths March 10 – Johann Rudolf Glauber, German chemist (born 1604) May 21 – Niccolò Zucchi, Italian astronomer (born 1586)
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