Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in ...

Eye color is determined by the amounts of melanin, pheomelanin, and eumelanin in the iris. Babies' eye color may change until about 1 year old, as most pigment is produced in the first six months.

Eye color can be changed temporarily with cosmetic options like colored contacts or makeup, and permanently through surgical procedures. Surgical eye color changes come with risks like infection, ...