Optical illusions are a fascinating way to show how the brain sees one image even though there are multiple images within the same picture. The Rubin's vase is a classic example of this phenomenon.

You may be familiar with the “vase or two faces” images (known as Rubin’s vase), where a single image looks like both a vase and two faces in profile. This oddly shaped vase goes much farther than ...

Like the famous image of two faces outlining a vase, an individual life form and its environment create a whole that is greater than the sum of its parts. Disclaimer: AAAS and EurekAlert! are not ...