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![[:es]Mutant zebrafish with extra fin bones may hold clues to how the first animals walked on land[:]](https://katedra.eus/app/uploads/2021/02/fish_1280p_0-245x140.jpg)
[:es]Mutant zebrafish with extra fin bones may hold clues to how the first animals walked on land[:]
Almost 700 years ago, a Dutch naturalist envisioned a fish with arms that would enable it to climb out of the water, setting the stage for terrestrial life. Now, it turns out, his fantasy had roots in reality. Researchers studying skeletons of the finger-size zebrafish have discovered mutants that grow extra bones in their front…
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![[:es]Swarms of robotic fish can synchronize their swimming, for the first time[:]](https://katedra.eus/app/uploads/2021/01/011521-fishbot-thumbnail-playbutton-245x140.png)
[:es]Swarms of robotic fish can synchronize their swimming, for the first time[:]
Swimming in sync is one of the most important lessons a school of fish can learn: The coordination helps them find food—and evade predators. But when scientists try to train robots to match this stunning natural feat, most fall short. Now, researchers have developed a fleet of seven underwater “fishbots” that can swim in circles—without…
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![[:es]Mathematicians Resurrect Hilbert’s 13th Problem[:]](https://katedra.eus/app/uploads/2021/01/Hilberts_13th_2880_Lede-245x140.jpg)
[:es]Mathematicians Resurrect Hilbert’s 13th Problem[:]
Long considered solved, David Hilbert’s question about seventh-degree polynomials is leading researchers to a new web of mathematical connections.
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![[:es]The legendary dire wolf may not have been a wolf at all[:]](https://katedra.eus/app/uploads/2021/01/Dire_wolves_1280x720-245x140.jpg)
[:es]The legendary dire wolf may not have been a wolf at all[:]
One of North America’s most famous ancient predators—and a favorite of Game of Thrones fans—emerged as mysteriously as it disappeared. Dire wolves, which died out with mammoths and saber-toothed cats at the end of the last ice age, were long thought to be close cousins of gray wolves. Now, the first analysis of dire wolf…
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![[:es]Scientists ‘program’ living bacteria to store data[:]](https://katedra.eus/app/uploads/2021/01/Ecoli_1280p_0-245x140.jpg)
[:es]Scientists ‘program’ living bacteria to store data[:]
Hard disks and optical drives store gigabits of digital data at the press of a button. But those technologies—like the magnetic tapes and floppy drives before them—are apt to become antiquated and unreadable when they are overtaken by new technology. Now, researchers have come up with a way to electronically write data into the DNA…
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![[:es]Galloping sea lions could inspire land-sea robots[:]](https://katedra.eus/app/uploads/2021/01/010420-sea-lion-thumbnail-playbutton-245x140.png)
[:es]Galloping sea lions could inspire land-sea robots[:]
Some robots swim and dive through the water; others scurry across the land. Now, researchers want to build a machine that can do both. Their inspiration? The California sea lion.
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![[:es]The science events to watch for in 2021[:]](https://katedra.eus/app/uploads/2020/12/d41586-020-03651-0_18696420-245x140.jpg)
[:es]The science events to watch for in 2021[:]
Climate change and COVID-19 vaccines are among the themes set to shape research.
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![[:es] To Make Better Hurricane Models, Consider Air Pollution [:]](https://katedra.eus/app/uploads/2020/12/hurricane-harvey-texas-800x600-1-245x140.jpg)
[:es] To Make Better Hurricane Models, Consider Air Pollution [:]
New research uses Hurricane Harvey as a case study to demonstrate the devastating power of aerosols to supercharge tropical storms.
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![[:es]Geoengineers inch closer to Sun-dimming balloon test[:]](https://katedra.eus/app/uploads/2020/12/atmosphere_1280p-245x140.jpg)
[:es]Geoengineers inch closer to Sun-dimming balloon test[:]
For years, the controversial idea of solar geoengineering—lofting long-lived reflective particles into the upper atmosphere to block sunlight and diminish global warming—has been theoretical. It’s starting to get real: Today, after much technical and regulatory wrangling, Harvard University scientists are proposing a June 2021 test flight of a research balloon designed to drop small amounts…