Pink and green is one of those color combinations that seems as though it has existed since the beginning of time. And in many ways, it has. Pink and green exist in the starbursts of the cosmos.

Animals with ultraviolet color patterns can be found all over nature. Here’s what we know about what purpose these patterns serve.

Green is the easygoing color of grass lawns and leafy trees, but it’s also among the most difficult of paint hues to get right. “Pink, blue and green all can be very, very tricky when they ...