Category Archives: Featured Facts

Slower Than a Turtle- The Speed of Electricity

turtle-light-bulb

Lindsey asks: How fast do electrons flow inside electrical cables? You may be surprised to learn that electrons flow through a typical copper wire much slower than a turtle walks. Each wire that conducts a flow of electrons, producing usable electric current, is composed of billions of atoms. To move along it, the electrons have to traverse these atoms, randomly […]

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Is “Peanut Gallery” a Racial Term?

peanuts

Matt J. asks: Was the peanut gallery expression really originally a racial term? Used to refer to those giving unsolicited (and unvalued) advice, the expression “peanut gallery” has its roots in late 19th century vaudeville, although for some, the phrase is considered a racial slur. A typical vaudevillian show of music, drama, comedy, acrobatics, dance and other acts was performed […]

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How Do Other Animals Deal with the Umbilical Cord and Placenta When the Baby is Born?

horse-birth

Brandi N asks: How do other primates deal with the umbilical cord and placenta when the baby is born when they don’t have any sort of medical help to make sure everything’s handled right? Other than certain modern humans, some marine mammals (like whales and dolphins), chimpanzees and a few domesticated animals, mammal mothers typically eat the afterbirth. While most […]

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