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Just before Hubble’s Law was published in 1929, another far-reaching finding was made by the son of a Scottish shepherd. Before going on holiday, he left a dish with bacteria near the window of his laboratory. When he came back, he was just about to throw the dish away when he noticed something out of the ordinary. He double-checked and saw a blue mould in the dish around which the bacteria had been destroyed. The blue mould was in fact the natural form of penicillin which Fleming realized was an effective way of killing bacteria. A few years later, penicillin was being mass-produced and helping to save the lives of millions. Despite the outcome of his discovery, Fleming remained modest and unassuming. ‘Nature makes penicillin,’ he said, ’I just found it.’
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He double-checked and saw a blue mould _______.
was being mass-produced and helping to save the lives of millions.
which Fleming realized was an effective way of killing bacteria.
he left a dish with bacteria near the window of his laboratory.
in the dish around which the bacteria had been destroyed.
