Science
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![[:es]Can you guess the ages of these faces?[:]](https://katedra.eus/app/uploads/2018/10/faces_16x9.jpg)
[:es]Can you guess the ages of these faces?[:]
Humans are awful at estimating a person’s age based on their face alone. This can lead not only to uncomfortable social situations, but also to critical errors in criminal investigations and enforcing age-based restrictions on such things as alcohol and gambling. New research shows people are usually off by about 8 years, and their estimate…
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![[:es]Crop-protecting insects could be turned into bioweapons, critics warn[:]](https://katedra.eus/app/uploads/2018/10/bugs_16x9.jpg)
[:es]Crop-protecting insects could be turned into bioweapons, critics warn[:]
It sounds like science fiction: A research program funded by the U.S. government plans to create virus-carrying insects that, released in vast numbers, could help crops fight threats such as pests, drought, or pollution. “Insect Allies,” as the $45 million, 4-year program is called, was launched in 2016 with little fanfare. But in a policy…
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![[:es]Arrays of atoms emerge as dark horse candidate to power quantum computers[:]](https://katedra.eus/app/uploads/2018/09/DSC05274_nolabel_online.jpg)
[:es]Arrays of atoms emerge as dark horse candidate to power quantum computers[:]
In a small basement laboratory, Harry Levine, a Harvard University graduate student in physics, can assemble a rudimentary computer in a fraction of a second. There isn’t a processor chip in sight; his computer is powered by 51 rubidium atoms that reside in a glass cell the size of a matchbox. To create his computer,…
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![[:es]Common weed killer—believed harmless to animals—may be harming bees worldwide[:]](https://katedra.eus/app/uploads/2018/09/bees_16x9_1.jpg)
[:es]Common weed killer—believed harmless to animals—may be harming bees worldwide[:]
Glyphosate, the world’s most widely used herbicide and one long touted as harmless to animals, might be taking a toll on honey bees. The chemical appears to disrupt the microbial community in the bees’ digestive system, making them more vulnerable to infection. The discovery adds another potential reason for the alarming decline of honey bees…
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![[:es]Meta-analyses were supposed to end scientific debates. Often, they only cause more controversy[:]](https://katedra.eus/app/uploads/2018/05/index.jpeg)
[:es]Meta-analyses were supposed to end scientific debates. Often, they only cause more controversy[:]
Although the number of meta-analyses has exploded, many don’t bring clarity—whether it’s on the effect of “positive parenting,” the relation between antidepressants and suicide, or the health benefits of organic produce.
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![[:es]Scientists engineer a powerful new weapon against antibiotic-resistant bacteria[:]](https://katedra.eus/app/uploads/2018/09/Klebsiella_16x9.jpg)
[:es]Scientists engineer a powerful new weapon against antibiotic-resistant bacteria[:]
Meningitis, pneumonia, deadly diarrhea. Antibiotic developers have long struggled to treat such dreaded diseases because the bacteria that cause them have double cell walls with an outer membrane that is particularly difficult for drugs to penetrate. The only new products to fight such gram-negative bacteria in the past 50 years are variations on existing, already…
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![[:es]Master female artisan broke the male-dominated mold in ancient Greece[:]](https://katedra.eus/app/uploads/2018/09/crete_16x9.jpg)
[:es]Master female artisan broke the male-dominated mold in ancient Greece[:]
Potterymaking in ancient Greece was a male-dominated profession, but about 3000 years ago, one woman from the island of Crete broke the mold to become the only known female master ceramicist in antiquity. The finding, based on a lengthy biomechanical analysis of her skeletal remains, sheds light on the elevated roles played by women in…
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![[:es]Artificial intelligence spots obesity from space[:]](https://katedra.eus/app/uploads/2018/09/Fig1-1280x720-FINAL.jpg)
[:es]Artificial intelligence spots obesity from space[:]
Some public health problems are so large you can see them from space. Artificial intelligence can use satellite images to estimate a region’s level of obesity—even without spotting the overweight people, a new study reveals. Instead, it relies on cues such as the distribution of buildings and trees
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![[:es]These half-billion-year-old creatures were animals—but unlike any known today[:]](https://katedra.eus/app/uploads/2018/08/Stromatoveris_16x9.jpg)
[:es]These half-billion-year-old creatures were animals—but unlike any known today[:]
So-called Ediacaran organisms have puzzled biologists for decades. To the untrained eye they look like fossilized plants, in tube or frond shapes up to 2 meters long. These strange life forms dominated Earth’s seas half a billion years ago, and scientists have long struggled to figure out whether they’re algae, fungi, or even an entirely…
