London suffered one of its worst cholera outbreaks. The leading voices in medicine believed the disease emanated from the foul gasses of London’s polluted streets. John Snow, a prominent ...

In 1848, there was a second outbreak of cholera in London. Dr John Snow, a physician and specialist in medical hygiene, doubted that bad air caused the disease. Dr Snow carried out his own ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...