Quanta
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[:es]How Jurassic Plankton Stole Control of the Ocean’s Chemistry[:]
[:es]Only 170 million years ago, new plankton evolved. Their demand for carbon and calcium permanently transformed the seas as homes for life.[:]
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[:es]Cell-Bacteria Mergers Offer Clues to How Organelles Evolved[:]
[:es]Cells in symbiotic partnership, nested one within the other and functioning like organelles, can borrow from their host’s genes to complete their own metabolic pathways.[:]
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[:es]Your Brain Chooses What to Let You See[:]
[:es]Beneath our awareness, the brain lets certain kinds of stimuli automatically capture our attention by lowering the priority of the rest.[:]
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[:es]To Pay Attention, the Brain Uses Filters, Not a Spotlight[:]
[:es]A brain circuit that suppresses distracting sensory information holds important clues about attention and other cognitive processes.[:]
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[:es]Math Reveals the Secrets of Cells’ Feedback Circuitry[:]
[:es]Maintaining perfect stability through negative feedback is a basic element of electrical circuitry, but it’s been a mystery how cells could do it — until now.[:]
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[:es]Long-Lived Stellar Blast Kindles Hope of a Supernova We’ve Never Seen Before[:]
[:es]A giant star’s death throes may offer the first evidence of a pair-instability supernova, and a glimpse of the first stars in the universe. [:]
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[:es]Physicists Finally Nail the Proton’s Size, and Hope Dies[:]
[:es]A new measurement appears to have eliminated an anomaly that had captivated physicists for nearly a decade. [:]
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[:es]Are We All Wrong About Black Holes?[:]
[:es]Craig Callender worries that the analogy between black holes and thermodynamics has been stretched too far. [:]
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[:es]Fossil DNA Reveals New Twists in Modern Human Origins[:]
[:es]Modern humans and more ancient hominins interbred many times throughout Eurasia and Africa, and the genetic flow went both ways.[:]