Zientzia hedabideetan
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![[:es]La megasequía de 60 años que venció a todo un imperio[:]](https://katedra.eus/app/uploads/2019/12/1575875145_996776_1575879038_noticia_normal_recorte1.jpg)
[:es]La megasequía de 60 años que venció a todo un imperio[:]
Los cambios en el clima marcaron el destino de grandes civilizaciones como la asiria o la romana
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![[:es]Gure planeta zianobakterioei esker oxigenatu zen[:]](https://katedra.eus/app/uploads/2019/12/Earth-Erde.jpg)
[:es]Gure planeta zianobakterioei esker oxigenatu zen[:]
Planetaren oxigenazioa gakoa izan zen ezagutzen dugun bizia bere baitan har zezan Lurrak. Ezinbestekoa izan zen animaliak sor zitezen, esaterako. Baina ez dago argi nola eman zen oxigenazio-prozesua bera. Science aldizkariak argitaratu duen eredu matematiko batek dioenez, planetaren oxigenazio-prozesu konplexu hark zianobakterio fotosintetiko sinpleak besterik ez zituen behar izan. Ez zen inongo iraultza tektoniko zein…
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![[:es]The gene-based hack that is revolutionizing epidemiology[:]](https://katedra.eus/app/uploads/2019/12/d41586-019-03754-3_17483306.jpg)
[:es]The gene-based hack that is revolutionizing epidemiology[:]
Mendelian randomization offers a simple way to distinguish causation from correlation. But are scientists overusing it?
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![[:es]La estación espacial internacional capta destellos de rayos gamma y ‘elfos’[:]](https://katedra.eus/app/uploads/2019/12/La-estacion-espacial-internacional-capta-destellos-de-rayos-gamma-y-elfos_image_380.png)
[:es]La estación espacial internacional capta destellos de rayos gamma y ‘elfos’[:]
En octubre de 2018, durante una tormenta eléctrica sobre el mar de las Molucas (Indonesia), se produjeron simultáneamente dos violentos fenómenos atmosféricos: un estallido de rayos gamma terrestre y un enorme anillo de luz conocido como ‘elfo’. Justo en ese momento pasaba por encima la estación espacial internacional y registró la relación de los dos…
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![[:es]Microsatellites will capture GPS reflections to sharpen weather forecasts[:]](https://katedra.eus/app/uploads/2019/12/NASA-Hurricane-Harvey-satellite-1280x720.jpg)
[:es]Microsatellites will capture GPS reflections to sharpen weather forecasts[:]
Earlier today, after a successful rocket launch from India, the beginnings of a new satellite constellation for Earth observation took place. An existing flotilla of more than 80 microsatellites owned by the startup Spire Global, based here, captures signals that have traversed the atmosphere from GPS satellites to measure key properties such as temperature and…
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![[:es] Descubren en Indonesia la primera escena de caza pintada por los humanos [:]](https://katedra.eus/app/uploads/2019/12/Descubren-Indonesia-primera-pintada-humanos_1308179247_14120984_1020x574.png)
[:es] Descubren en Indonesia la primera escena de caza pintada por los humanos [:]
La pintura identificada en una cueva de la isla de Célebes representa figuras humanas cazando y fue pintada hace 43.900 años, mucho antes de las que conocemos en Europa.
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![[:es]Mathematician Proves Huge Result on ‘Dangerous’ Problem[:]](https://katedra.eus/app/uploads/2019/12/CollatzGraph_1300Lede.jpg)
[:es]Mathematician Proves Huge Result on ‘Dangerous’ Problem[:]
Mathematicians regard the Collatz conjecture as a quagmire and warn each other to stay away. But now Terence Tao has made more progress than anyone in decades.
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![[:es]DNA recovered from Arctic lakes holds clues for our future world[:]](https://katedra.eus/app/uploads/2019/12/ca_1213NID_BaffinIsland2017-29_online.jpg)
[:es]DNA recovered from Arctic lakes holds clues for our future world[:]
High in the Canadian Arctic on Baffin Island, beneath 10 meters of water and many more of mud, sits a refrigerated archive of Earth’s past life. The deep sediments in a small lake called CF8 hold ancient pollen and plant fossils. But it now appears that the mud harbors something else: ancient DNA from as…
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![[:es] Near-Earth asteroid numbers grow in record year[:]](https://katedra.eus/app/uploads/2019/12/191210_asteroid_count.jpg)
[:es] Near-Earth asteroid numbers grow in record year[:]
When it comes to space rocks, there are always more to be found.