These days, most of us have a smartphone. They are so commonplace that we rarely stop to consider how amazing they truly are.

The holidays always remind us of our favorite toys from when we were kids. Johnny Astro, an Erector set, and — of course — a Spirograph. [CraftDiaries] has an Arduino machine that isn’t quite a ...

A branch of geology and earth sciences, stratigraphy is a field of study that deals with the arrangement and succession of strata (layers) in the Earth. Additionally, it involves the origin, ...