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August 12, 2014 AT 2:00 am

What’s heavier: a pound of feathers or a pound of lead? A riddle, explained. #makereducation

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This video from Slate explores the science behind the schoolyard riddle – what’s heavier: a pound of feathers or a pound of lead? Watch the video on Slate.

The obvious answer to the old “feathers or lead?” riddle is that they weigh the same, but clever research on the subject offers a more complicated view. Don’t count out so-called “dynamical symmetry.” ​

Read more.


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