The Eternal City: A History of Rome in Maps

The Eternal City (cover)Something I often do when reviewing a book is talk about it in terms of the expectations of its potential readers—particularly if readers might come to a book with expectations that the book does not meet, because the book is doing something different. If you’re expecting The Eternal City: A History of Rome in Maps, written by the art historian Jessica Maier and published last November by the University of Chicago Press, to be basically A History of Rome in 100 Maps, it isn’t: the count is more like three dozen. This doesn’t mean that The Eternal City is a slight book—it most certainly is not, though at 199 pages it’s a bit shorter than, say, A History of America in 100 Maps (272 pages).

But counting maps would miss the difference in Maier’s approach. To invoke xkcd, this is depth-first rather than breadth-first: there are fewer maps here, but they’re discussed in much more depth than the two-page spreads of the hundred-map books, and provided with much more context. This is a history of Rome in maps in which history, Rome and maps all get their proper share of attention.

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Emissions Drop Due to Coronavirus Outbreak

Map of mean tropospheric NO2 density over China, January-February 2020
NASA Earth Observatory/Joshua Stevens

As you may have seen elsewhere, the coronavirus pandemic is having an impact on air pollution, as countries shut down human and economic activity in an attempt to deal with the outbreak. Take nitrogen dioxide. Tropospheric NO2 density decreased significantly over China between January and February, and the same seems to be happening in northern Italy, which normally has some of the most severe air pollution in Europe. See the ESA’s animation:

More broadly, try this online map, which compares NO2 emissions before and after 20 February 2020 anywhere on the planet. [Maps Mania]

Previously: Mapping Nitrogen Dioxide Pollution.