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Sid Perkins

Sid Perkins' Articles

  • Science Visualized

    Evolution of river systems

    A river’s erosion downward and across a landscape is based on a variety of factors, including terrain steepness and the arrangement of tributaries.
  • Society News

    Forty finalists selected in 2014 Intel Science Talent Search

    The 40 young scientists will visit Washington, D.C., March 6–12 to tour the White House and other national landmarks, present their research to judges and the public in a poster session at the headquarters of the National Geographic Society and attend a black-tie awards gala at the National Building Museum.
  • Reviews & Previews

    The Tell

    While most people think they’re good at spotting liars, the truth may come as a surprise. The vast majority can detect a lie only 54 percent of the time (barely better than flipping a coin). A tiny percentage, maybe one in 1,000 people, can discern a lie more than 80 percent of the time. These “truth wizards” are exceptionally keen at reading a person’s facial expressions and body language, among other clues.
     
    Hertenstein, a psychologist, chronicles research into what such nonverbal cues can reveal about a person.
  • Reviews & Previews

    Ingenious

    The challenge was to build a safe, mass-producible vehicle that can carry two people 100 miles using no more than the energy in a gallon of gas. In 2007, the X Prize Foundation offered $10 million to be shared by teams that could pull it off, and in 2010, three groups claimed the prize.

  • Reviews & Previews

    Our Final Invention

    Computers already make all sorts of decisions for you. Imagine if the machines controlled even more aspects of life and could truly think for themselves.
  • People
    Researchers Bruce Mate (right) and Al Goudy prepare to tag a blue whale off Costa Rica.

    Seeking the loneliest whale

    An enigmatic whale roams the North Pacific, and next year Bruce Mate will lead a monthlong expedition to find it.
  • Reviews & Previews

    What Makes a Hero?

    Stories of heroes are all over the news: First responders and even concerned passersby put themselves in harm’s way to help others, going against every instinct for self-preservation. What could explain such selfless acts? Even Charles Darwin struggled to understand the evolutionary upside of self-sacrifice.