Zientzia hedabideetan
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Gamma Rays May Be Clue on Dark Matter
A small, newly discovered galaxy orbiting the Milky Way is emitting a surprising amount of electromagnetic radiation in the form of gamma rays, astronomers reported Tuesday. The finding may be the latest in a long string of cosmic false alarms, they said, or it might be that the mysterious dark matter that permeates the universe…
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Found: A giant, ancient arthropod that grew up to 7 feet long
The newly discovered animal, dubbed Aegirocassis benmoulae, is an early member of the arthropod family tree, making it an ancient ancestor of cockroaches, butterflies and shrimp. It lived about 480 million years ago in a shallow sea that once covered part of the Sahara Desert.
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Consiguen eliminar las placas del alzhéimer con ultrasonidos
La técnica consiste en estimular las células de la glía de manera no invasiva para que eliminen las proteínas que causan la enfermedad. En las pruebas con ratones los investigadores han conseguido eliminar hasta un 75% de las placas.
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Decisions on a knife-edge
Women predisposed to ovarian cancer can reduce their risk with surgery, but with it comes early menopause. To avoid this, some doctors propose delaying part of the procedure. But is this safe?
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Kameleoiek azaleko egitura-aldaketen bidez aldatzen dute kolorea
Kameleoiek azaleko egitura-aldaketen bidez egiten dituzte kolore-aldaketa azkarrak. Genevako Unibertsitateko ikertzaileek argitu dute azalak argia desberdin islatzea eraginez aldatzen dutela kolorea, eta ez, beste animalia batzuek bezala, pigmentuak pilatuz edo barreiatuz. Nature Communications aldizkarian argitaratu dute lana. Kameleoiek azaleko egitura-aldaketen bidez egiten dituzte kolore-aldaketa azkarrak. Genevako Unibertsitateko ikertzaileek argitu dute azalak argia desberdin islatzea eraginez…
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Our Brains Hate Waiting So We Sped Up Everything Else
Sidewalk rage, road rage and anger at slow-loading web pages are all part of our evolutionary inheritance
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La costa andaluza ha sufrido un gran tsunami cada mil años
El gran tsunami que asoló Cádiz tras el terremoto de Lisboa de 1755 es el más reciente, pero no el único. Nuevos depósitos sedimentarios hallados en la playa gaditana de Barbate demuestran que un tsunami de gran magnitud se produjo hace 4.000 años, y se suma a otros siete ocurridos durante los últimos 7.000 años,…
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Conflict resolution: Wars without end
The world is full of bloody conflicts that can drag on for decades. Some researchers are trying to find resolutions through complexity science.
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Oldest known sponge pushes back date for key split in animal evolution
To the untrained eye, real animal sponges may seem as boring as synthetic kitchen sponges. But the evolution of these highly porous creatures has long been a mystery, with major implications for the early evolution of animals