In the natural world, the absence of bright colours is anything but dull. Black or white, or combinations of both, adorn some of nature's most charismatic creatures. The giant panda, native to the ...

Both black and white rhinoceroses are actually gray. They are different not in color but in lip shape. The black rhino has a pointed upper lip, while its white relative has a squared lip.

So how did they all end up in black and white? It feels like a distant memory, but once upon a time America's carmakers produced vehicles in a veritable rainbow of colors. As recently as 2005 ...