This segment originally aired in December 2023. It aired again in March 2025. Every other Friday on Morning Edition, the Outside/In team answers a question from a listener about the natural world.

Like many people, Amy Morin, a psychotherapist and author of “13 Things Mentally Strong People Don’t Do,” loves to be surrounded by the color blue. So much so, in fact, that she lives on a sailboat in ...

The color blue has many associations—metaphorically “feeling blue” as depressed, musically singing “the blues,” politically progressive “blue states,” or optimistic “blue sky” goals. But what effect ...

Researchers have found a distinct absence of mentions of blue in ancient texts, but does that mean the color didn't exist? It’s hard to imagine a world without the color blue. What would come of the ...

Blue is often psychologically associated with calm and trust, which is partly why corporate logos seem to overwhelmingly ...