Zientzia hedabideetan
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A neutron star almost too massive to exist
Astronomers make good use of the Shapiro Delay.
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![[:es]A Woman’s AncestryDNA Test Revealed a Medical Secret[:]](https://katedra.eus/app/uploads/2018/07/lead_720_405-3.jpg)
[:es]A Woman’s AncestryDNA Test Revealed a Medical Secret[:]
As a cancer patient, she had received cord-blood cells from an anonymous donor. The DNA from those cells led her to him.
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![[:es]De 0 a 40.000, el censo de cigüeñas en España por el cambio climático[:]](https://katedra.eus/app/uploads/2019/09/John-Wright-35.jpg)
[:es]De 0 a 40.000, el censo de cigüeñas en España por el cambio climático[:]
Las cigüeñas han modificado sus patrones de migración por el cambio climático y los vertederos
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![[:es]Massive, blimplike experiment lowers weight limit on neutrino[:]](https://katedra.eus/app/uploads/2019/09/Slider4_KATRINwithAircoils-1280x720.jpg)
[:es]Massive, blimplike experiment lowers weight limit on neutrino[:]
Physicists have set a new limit on the mass of nature’s lightest particle of matter. The neutrino can weigh no more than 1.1 electron volts (eV)—less than one-500,000th the mass of an electron—say experimenters with the Karlsruhe Tritium Neutrino (KATRIN) experiment at the Karlsruhe Institute of Technology in Germany. Reported on 13 September at a…
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![[:es]Debating the bedrock of climate-change mitigation scenarios[:]](https://katedra.eus/app/uploads/2019/09/d41586-019-02744-9_17160936.jpg)
[:es]Debating the bedrock of climate-change mitigation scenarios[:]
Researchers and policymakers rely on computer simulations called integrated assessment models to determine the best strategies for tackling climate change. Here, scientists present opposing views on the suitability of these simulations.
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![[:es]Los fósiles más antiguos de la Tierra guían la búsqueda de vida en Marte[:]](https://katedra.eus/app/uploads/2019/09/osea.jpg)
[:es]Los fósiles más antiguos de la Tierra guían la búsqueda de vida en Marte[:]
El autor explica la expedición de investigadores de los ‘rovers’ marcianos ExoMars y Mars2020 en Australia como campo de pruebas para buscar vida en Marte
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![[:es]Could editing the DNA of embryos with CRISPR help save people who are already alive?[:]](https://katedra.eus/app/uploads/2019/09/CRISPRchildren_v2_Illustration_MollyFerguson_091219-768x432.jpg)
[:es]Could editing the DNA of embryos with CRISPR help save people who are already alive?[:]
Amid last year’s backlash against the birth of the world’s first genetically edited babies, some experts preached prudence: Editing the genomes of embryos, they argued, could one day “cure” people of diseases before they’re even born. But there is another, less-discussed potential application of editing an embryo: tweaking its DNA to help save someone who…
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![[:es] Abortatzeko eskubidea, osasun-eskubidea [:]](https://katedra.eus/app/uploads/2019/09/hkn962_article_big.jpg)
[:es] Abortatzeko eskubidea, osasun-eskubidea [:]
Ez da ohikoa medikuntzan espezializatutako aldizkari batek gai berari buruzko bi editorial idaztea, aste gutxiko tartearekin. The Lancet astekari ospetsuak egin du, eta ez da kasualitatea, noski: landutako auziak zenbaterainoko garrantzia duen erakusten du horrek. Hain zuzen, abortua da gaia; zehatzago esateko, modu seguruan abortatzeko aukerak murrizteak dituen ondorioak.
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![[:es]Lo que la naturaleza le debe a Alexander von Humboldt[:]](https://katedra.eus/app/uploads/2019/09/Lo-que-la-naturaleza-le-debe-a-Alexander-von-Humboldt_image_380.jpg)
[:es]Lo que la naturaleza le debe a Alexander von Humboldt[:]
Considerado el padre de la geografía moderna universal, Alexander von Humboldt, nacido en Alemania hace hoy 250 años, es mucho más que eso. Sus viajes por Europa y América del Sur –con parada en Canarias– aportaron una nueva visión de la naturaleza desde el humanismo, la zoología, la geología, la vulcanología, la etnografía, la climatología…
