Indentations Provide Structural Support While Lowering Production Costs. Plastic milk containers are created by blowing plastic resin into a mold. Thanks to the scale of milk jug production, ...

An ancient granite pebble included indentations resembling a face, its nose a red dot. A study says it may have had symbolic significance.

It features three indentations, two small and symmetrical, one larger and irregular, framing a central red dot. The placement of the dot in relation to the indentations gives the impression of a ...

In some cultures, dimples are seen as a sign of beauty or even good luck. But what causes dimples, and why do some people have them while others don't? Dimples are small, natural indentations in ...

Thanksgiving cactus stem segments have two to four sharp points on each side, giving the stem a jagged appearing edge. The stem segments on a Christmas cactus have more rounded teardrop indentations.

A granite pebble from San Lázaro rock-shelter, dated to about 43,000 years ago, displays a red ocher dot, three indentations, and a human fingerprint.

Any well-stocked kitchen will have a variety of knives, from tiny blades for paring to giant, meat-slicing hatchets. You may have noticed a few knives have oval-shaped indentations in the blade ...