It was an urban hub filled with bankers and merchants, with many international contacts.

In recent years, evangelicalism has been swept with a city-centric ethos focused on large urban hubs.

These swollen urban hubs, the researchers say, are about the minimum size a fast-spreading virus would need to sustain itself.

It would reinforce the idea that combustion engines should play only a marginal role in busy urban hubs.

It was preserved through oral use in rural areas, isolated from urban hubs.