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[:es]Researchers report chemical evidence of organisms that lived 3.95 billion years ago, but scepticism abounds.[:]

[:es]The universe has not cooperated with physicists’ hopes. In desperation, many are looking for new ways to search for surprises at the Large Hadron Collider.[:]

[:es]How does ApoE4 do its dirty work? Since 1993, when this variant of the apolipoprotein E gene was found to multiply the risk of the most common form of Alzheimer’s disease as much as fourfold, researchers have probed its connections to β-amyloid, the dominant suspect for the cause of the illness. This protein fragment forms…

[:es]Our brains house extremely complex neuronal circuits whose detailed structures are still largely unknown. This is especially true for the cerebral cortex of mammals, where, among other things, vision, thoughts or spatial orientation are computed. Here, the rules by which nerve cells are connected to each other are only partly understood. A team of scientists…

[:es]Improvements in mapping protein–protein interactions are allowing researchers to deconstruct the delicate mechanics of cells.[:]

[:es]Zergatik diagnostikatzen zaizkie berandu emakumeei bihotzeko gaixotasunak? Ba al dute gizonek osteoporosirik? Depresioa pairatzen dutenen gehiengoa emakumezkoa bada, zergatik ikertzen da eskuarki animalia arretan? 1991n Bernadine Healyk The New England Journal of Medicine aldizkarian idatzitako editorial batek hautsak harrotu zituen, eta zeraz ohartarazteko bidea ireki zuen: sexu batean soilik egindako ikerketak ezin direla, besterik gabe,…

[:es]After probing and peering at the genitalia of nearly 500 crocodiles in Palo Verde, Murray and his colleagues found something odd: The sex ratio was way out of whack, with males outnumbering females four to one among hatchling crocs. What’s more, the animals’ tissues were tainted with a synthetic steroid, which the researchers suspect was…

[:es]Researchers identify Plasmodium simium in Atlantic Forest area of Rio de Janeiro state, raising concerns for eradication of disease in Brazil and beyond[:]

[:es]Researchers deliberately heated up a slice of the Antarctic sea bed to see how ecosystems responded.[:]