Snow looks white in the way salt, sugar, or crushed ice looks white. Obvious at first glance. Almost boring. But if you stop ...
Fresh snow can look like a blank sheet of paper, so bright it almost hurts to stare at in midday sun. Yet at the microscopic level, those flakes are not white at all, and the color we think we see is ...
Add Yahoo as a preferred source to see more of our stories on Google. The president's science adviser has executive privilege and is also responsible to Congress. Nicolas Economou/NurPhoto via Getty ...