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  • Can selfies predict moods?

    Can selfies predict moods?

    Your latest selfie might reveal more about what's going on in your community or country than what's going on with your hair today.

  • How Sweeps Week Works

    How Sweeps Week Works

    In times past, if your favorite TV character was about to get married or have a baby, there was a good chance it would happen in February, May or November, because those were Sweeps Week periods. What are the Sweeps, and are they still relevant?

  • Does scifi predict tech innovations?

    Does scifi predict tech innovations?

    Flying cars! Colonies on Mars! Yes, science fiction has gotten a lot of predictions wrong. But what's remarkable is how much it got right.

  • How the Amazon Fire Phone Works

    How the Amazon Fire Phone Works

    Amazon's jumped into the smartphone market with a device that's loaded with bells and whistles. But does the Fire phone pose a threat to privacy? And is it just geared to making us buy more things from Amazon?

  • Can selfies predict moods?
  • How Sweeps Week Works
  • Does scifi predict tech innovations?
  • How the Amazon Fire Phone Works
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How Pendulum Clocks Work

Have you ever looked inside a grandfather clock or a small mechanical alarm clock? Pendulum clocks are fairly complicated, but they rely on simple forces. Find out how pendulum clocks keep accurate time.

How Digital Scales Work

If you dismiss a digital scale as just the machine that weighs you, you're missing out. Peer into the heart of this common measuring device and you'll find something wondrous: a set of physical laws ingeniously harnessed to one very handy tool.

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