If you’re still not convinced your wrist needs a smartwatch but you’d nevertheless like a time-telling tool for at-a-glance convenience, then a super-simple digital device with a twist may appeal.

This image provided by the Ehime Institute of Industrial Technology's Paper Technology Center shows heat distribution of a hand on "cool paper," left, and a hand on regular paper. Red indicates higher ...

If you want to build paper airplane models of the space shuttle, F-16 Falcon, F/A-18 Hornet, and other aircraft, this page from the American Society of Mechanical Engineers offers plans and folding ...

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