Galen's ideas were the foundation of Europea medicine for 1400 years. This was due to the Church's support of his ideas, because he was a monotheist. If Galen had not been a monotheist (unusual for Roman times) the Church would've not supported his ideas.
how was penicillin discovered by chance?
Fleming discovered penicillin by accident in 1928: he left out some Staphylococcus bacteria in his laboratory. Mould grew on one of the plates with the bacteria and stopped the bacteria from growing. This mould was a fungus called penicillin.
how did Pasteur accidentally show that vaccinations could prevent diseaese?
his researcher, Charles Chamberland, left out a cholera culture over the weekend, they discovered that weakened cholera germs could make a chicken immune from later bouts of cholera.
how did the outbreak of disease lead to medical developments?
unusually hot weather and the Great Stink in 1858, forced the government to reform the sewage system.
the cholera outbreak in London in 1854 allowed Snow to discover the link between contaminated water and cholera.
