Taste a drop of seawater and the answer seems obvious: the ocean contains salt. The more interesting question is how it got there. There are no gigantic salt deposits steadily dissolving into every sea, and most rivers taste fresh even thou...
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For 73 years, the Titanic existed in two places at once: in history, where the details of its final night were argued over in inquiries, newspapers and survivor testimony, and somewhere in t...
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Draw a line from Miami to Bermuda, another from Bermuda to Puerto Rico, and a third back toward Florida, and you have the rough outline of one of the most famous imaginary places on Earth. T...
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There is a place on Earth where Mount Everest could be lowered beneath the waves and its summit would still remain underwater. It lies in the western Pacific, in the Mariana Trench, where th...
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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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Imagine putting the entire Solar System on a cosmic scale: the eight planets, every known moon, the asteroids, comets, dwarf planets, dust and the enormous Sun. The result would be absurdly...
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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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When Iñupiat hunters and biologists began finding ancient weapon fragments inside bowhead whales harvested in Arctic Alaska, the discoveries posed an extraordinary question: how long had the...
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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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