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Theory has it yawning helps cool the brain—and it turns out animals with bigger brains do indeed tend to yawn longer. Christopher Intagliata reports.
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With a shorter season of sea ice, polar bears have less access to marine mammals. But switching to a terrestrial diet deprives them of the fatty seal meals they need to thrive.
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The parachute flower smells like alarm pheromones of a honeybee, to attract tiny flies that feed on bees under attack.
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A technique called “biosparging” relies on pumping oxygen underground to help naturally occurring microorganisms multiply and consume oil spills.
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When rain fills the massive footprints left by elephants, communities of aquatic invertebrates quickly move in
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