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  • Thermoregulation in Dinosaurs

    Thermoregulation in Dinosaurs

    Data Point

    Grady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.

  • Counting Glomeruli

    Counting Glomeruli

    Image of the Week

    The human kidney contains about 1 million tiny filters called glomeruli with associated nephron tubules.