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Turning numbers into shapes offers potential medical benefits
Until recently, topology was seen as being among the most abstract fields of mathematics, one that bore out Henry John Stephen Smith’s 19th century toast: “Pure mathematics — may it never be of use to anyone!” But now the field, which deals with the shape of many-dimensional objects, has unexpectedly proved its usefulness in, of all places, […]
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For what you want to know, Bayes offers superior stats
It turns out that the old adage about statistics and damned lies wasn’t a joke. Sticks and stones may be bonebreakers, and words inflict no (physical) pain, but numbers can kill. In 2004, for instance, a statistical analysis suggested that antidepressant drugs raised the risk of suicide in youngsters and adolescents, leading the U.S. Food […]
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Loss of eyes in the sky hurts science on the ground
In a clean room at the Vandenberg Air Force Base in California sits the next great hope of the United States’ Earth-monitoring program. About the size of a minibus, it is covered in gold foil, riddled with electrical wires, and very clean. This $1.5-billion satellite is state-of-the-art, carrying five advanced instruments to measure everything from […]
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Tools tell a more complicated tale of the origin of the human genus
The first animals that could arguably be called “human” made the evolutionary scene a little less than 2 million years ago. These aren’t folks you’d mistake for modern-day Homo sapiens, or even the GEICO caveman. But they were clearly distinct from their more apelike predecessors. They had bigger brains, for one thing, and walked fully […]
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In ancient Southwest droughts, a warning of dry times to come
Anything but lush, the U.S. Southwest has been especially parched lately. About a decade ago a cycle of droughts began; the latest one has dried much of the region to a degree that meteorologists expect only twice a century. But look back a millennium or more, and you’ll find signs that today’s conditions are not […]
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