They are all around us, some strong, some weak, some easy to destroy some resilient in their surroundings and some even spread through coughs and sneezes. Tiny infectious microbes, from the virus that causes COVID-19 to airborne bacteria, kill millions of people around the world each year. Now engineers from ETH Zurich have studied how…
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In 1832, 1849, and 1852, 200 employees from a copper smelter in Paris were unaffected by the cholera outbreaks, and this caught the attention of physician Victor Burq. 500 employees, who worked in the same area, were also spared from the cholera outbreak. This made Burq conclude that copper had given these people some kind…
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