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[:es]Archaeologists and architects alike have long wondered why 15th century Incans built the grand citadel of Machu Picchu where they did, high in the remote Andes atop a narrow ridge […]

[:es] A giant data store quietly being built in India could free vast swathes of science for computer analysis — but is it legal? [:]

[:es]A DNA “knot” breaks several rules thought hard and fast. Now the race is on to understand it.[:]

[:es]A dark-matter detector picks up radioactive decay that takes place over trillions of years.[:]

[:es]New studies revise ideas about the symbiosis that gave mitochondria to cells and about whether the last common ancestor of all eukaryotes was one cell or many. [:]

[:es]Some twin-systems might be prime targets for alien life[:]

[:es]Nanofabbed bots are small enough to be delivered via syringe, raising all sorts of fantastic voyage possibilities. [:]

[:es]In an attempt to prove that the Turin Shroud—a strip of linen that some people believe was used to wrap Jesus’s body after his crucifixion and carries the image of […]

[:es]Study finds stool transplants from some donors are far more effective than others[:]