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Dinosaur DNA may still be out of reach, but scientists are uncovering something almost as exciting—ancient blood vessels hidden inside fossilized bones. In a massive Tyrannosaurus rex nicknamed Scotty ...

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When modern humans journeyed out of Africa, a rapid evolution in their red blood cells may have helped them survive — but it may have also led to the eventual disappearance of Neanderthals, a new ...

“Be prepared!” This enduring motto of the Scout movement will come to mind for many readers of a paper called “Bloodstain pattern dynamics in microgravity: Observations of a pilot study in the next ...