If you’re not particularly gifted in the art department, it can be hard enough to draw with a pencil and paper, let alone on a canvas as tiny as your nail bed. That’s why abstract nail art is so great ...

Archaeologists report that 60,000-year-old ostrich eggshell engravings reveal humanity’s earliest known use of geometry.

A member of the now-extinct hominid species Homo erectus engraved a geometric design on a sea shell nearly half a million years ago, long before the earliest evidence of comparable etchings made by ...