Look up on a clear night and the most obvious feature of the universe is not the stars. It is the darkness between them. That darkness seems perfectly ordinary, yet for centuries it posed a surprisingly deep problem. If space contains an en...
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It is one of those questions that sounds almost too simple to deserve a scientific explanation. Look up on a clear afternoon and the sky is blue. Yet that familiar color is the visible resul...
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Near the heart of the Milky Way lies a cloud with a reputation that sounds invented for a science-fiction cocktail menu. Sagittarius B2 contains alcohol. It also contains ethyl formate, an o...
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Few astronomical discoveries have produced a nickname as irresistible as the “diamond planet.” About 41 light-years away in the constellation Cancer, 55 Cancri e is a super-Earth nearly twic...
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In the Chihuahuan Desert of northern Mexico, where Durango, Chihuahua and Coahuila approach one another across an immense dry basin, a patch of landscape has acquired one of the strangest re...
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In 1929, while scholars were cataloguing manuscripts in Istanbul's Topkapı Palace, they encountered a fragment of an extraordinary world map. Painted in vivid colors on parchment traditional...
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From the ground, Earth is almost too large to understand. Nations fill maps. Mountain ranges divide regions. Oceans separate continents. Political borders seem concrete because they organize...
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Look down at a computer keyboard and you are looking at a museum whose exhibits still work. Some keys preserve decisions made by nineteenth-century typewriter manufacturers. Others carry sym...
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There is a peculiar kind of certainty that appears around traditional food. A grandmother made a dish one way, a restaurant in its supposed birthplace serves it another, and suddenly one ver...
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Few subjects can turn an ordinary Italian lunch into a tribunal quite as quickly as a traditional recipe. Put cream in carbonara, use pancetta instead of guanciale, add garlic where somebody...
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