A new exhibition chronicles how a paintings conservator and chemist solved a color mystery in one of the painter’s most beloved works. Vincent van Gogh's “Irises” (1889) was painted during ...

There are three identified types of heterochromia: Central heterochromia - this type is characterized by two colors within ...

“Brighter irises and larger pupils elicited greater donations,” noted experts from the Netherlands’ Leiden University in a ...

Study shows pupil size and iris brightness affect how others perceive your attractiveness, friendliness, and generosity.

Fall is the typical time to plant bulbs in the Tehachapi Mountains, and it is an autumn delight to purchase an array of bulbs ...

A large-format color printer from the Graphic Communications Group of Eastman Kodak (http://graphics.kodak.com) that is used for digital proofing. Iris printers use a ...