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    • What is a circadian rhythm?

      What is a circadian rhythm?

      Live Science via Yahoo News· 1 year ago

      woman turning off an alarm clock A circadian rhythm is a 24-hour cycle dictated by the body's internal clock, which is controlled by several...

    • How do fevers kill germs?

      How do fevers kill germs?

      Live Science via Yahoo News· 4 months ago

      Close up of an adult's hand holding a thermometer that reads 100.4. A young boy can be seen in the background under a blanket, as if ill. They're the...