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 organic molecule associated on Earth with fruity ar...
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Space is a vacuum, so an astronaut cannot simply lift a visor and take a sniff. Yet crews returning from spacewalks have repeatedly described something remarkably close to a smell of space:...
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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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For generations, chemistry books could place bismuth near the end of the periodic table's stable territory. Its naturally occurring isotope, bismuth-209, showed no detectable radioactive dec...
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When sponge divers found an ancient shipwreck off the small Greek island of Antikythera around 1900, they brought up the kinds of objects archaeologists expected from a wealthy vessel of the...
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On October 30, 1961, a Soviet Tu-95 bomber crossed the frozen landscape of Novaya Zemlya carrying an object so large that the aircraft had been specially modified to accommodate it. The bomb...
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Suppose engineers invent a computer chip that performs the same calculation using half as much electricity. The obvious conclusion is that electricity consumption should fall. Now suppose th...
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Ice presents a small everyday mystery. A cold pavement can be dangerously slippery even when the air temperature is far below freezing, while many other crystalline solids are perfectly easy...
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An old tree can carry the shape of an injury long after the branch that caused it has disappeared. A swollen collar may surround the site of a lost limb. Growth rings can bend around the old...
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On September 9, 1947, somebody working with one of the most advanced calculating machines in the United States opened its hardware and found an unusually literal explanation for a malfunctio...
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