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Charles Q Choi Archive

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  • The Brightest Object in the Early Universe

    Published June 30, 2011

    Scientists have discovered the most brilliant object yet from the infancy of the cosmos, a super-bright galaxy that challenges notions of how extraordinarily massive black holes evolved.

  • Thick-Headed Dinosaur Was King of the Head Butt

    Published June 29, 2011

    A domed-head dinosaur may have been the king of the head butt, with a better skull than any modern noggin-knocker for protecting its brain during such attacks.

  • Big Love: Woolly Mammoths, Huge Elephants May Have Interbred

    Published May 31, 2011

    The woolly mammoth may surprisingly have regularly interbred with a completely different and much larger elephant species, researchers now find.

  • Toothy Beast Was Once Ancient World's Largest Sea Monster

    Published May 26, 2011

    Bizarre shrimp-like monsters that were the world's largest predators for millions of years grew even larger and survived much longer than thought, scientists find.

  • Did Modern Humans Meet Neanderthals?

    Published May 10, 2011

    Neanderthals might have died off millennia earlier than before thought, suggesting they weren't around to mingle with modern humans, an international research team hints. But other scientists argue over these new findings.

  • No Terrible Twos? Young Tyrannosaurs Were Careful Predators

    Published May 10, 2011

    Adult tyrannosaurs such as Tyrannosaurus rex may have wielded the strength and size to kill large prey, but it turns out youngsters may had to have been more careful predators, using quickness and agility rather than raw power, scientists find.

  • 'Nutcracker Man' Ate Like a Cow (or Pig)

    Published May 03, 2011

    The strong-jawed human relative nicknamed "Nutcracker Man" likely didn't crack nuts at all, preferring to graze on grass like a cow instead, scientists find.

  • Largest 3-D Map Ever Opens Window to the Ancient Universe

    Published May 02, 2011

    The largest-ever three-dimensional map of the distant universe has been created using the light of the brightest objects in the cosmos.

  • Paleontologists Find Ancient, Hammer-Toothed Marsupials

    Published April 24, 2011

    Strange hammerlike teeth seen in two newfound species of ancient marsupials -- teeth unknown in any other mammal -- were the weapons they once used to smash open snail shells.

  • Crackling Electric Link Joins Saturn and Its Moon

    Published April 20, 2011

    A shimmering patch of light as big as Sweden detected at the north pole of Saturn is the spectacular result of a giant stream of electrically charged particles from the planet's moon Enceladus, scientists find.