We know that some nasty things are happening to the lungs, but why does the smoke change color?
Flowers broadcast their hidden treasure with bright colors, sweet scents and beautiful markings. However, flowers' markings are more than cosmetic...
Amber tinted sunglasses make things appear much sharper because they block the blue and red parts of sunlight.
Can insects see colors? As it turns out, it depends on what kind of eyes it has.