ECON213 Lecture 6: 213 NatGeo Main population article
19 Jun 2016
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There will soon be seven billion people on the planet. By 2045 global population is projected to reach nine billion. Cloth was leeuwenhoek"s business but microscopy his passion. He"d had five children already by his first wife (though four had died in infancy), and fatherhood was not on his mind. Before six beats of the pulse had intervened, as he later wrote to the royal society of london, leeuwenhoek was examining his perishable sample through a tiny magnifying glass. Its lens, no bigger than a small raindrop, magnified objects hundreds of times. Leeuwenhoek had made it himself; nobody else had one so powerful. The learned men in london were still trying to verify leeuwenhoek"s earlier claims that unseen animalcules lived by the millions in a single drop of lake water and even in. Now he had something more delicate to report: human semen contained animalcules too.
