We don’t know how the Ebola outbreak started. That’s a problem.

Vox

We don’t know how the Ebola outbreak started. That’s a problem.

In just 10 days over the summer of 1854, 500 people died of cholera in the Soho neighborhood of London. The city’s population had more than doubled to 2.3 million people in the first half of the 1800s, and its sewage system could not keep up. But the streams of human waste flowing into the […]

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