Sustainability Research & Innovations

Do Aliens Know We’re Here?

So far astronomers have discovered nearly 6,000 exoplanets—worlds that orbit stars other than our sun. If that number already feels ridiculously large, you’d better brace yourself: through extrapolation, there could be

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Why Do Songs Get Stuck in Your Head?

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman.You know that feeling when you just can’t get a song out of your head—just a short part of it playing over

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