Every other Friday on Morning Edition, the Outside/In team answers a question from a listener about the natural world. For the past few weeks, we’ve been tackling queries on the theme of “blue.” What ...

Scan the cave paintings and portable art of our Paleolithic ancestors and the colors black, yellow, and red abound. Shades of blue and green, however, are virtually nonexistent. For the past half ...

The seas of the Caribbean, Cookie Monster and the Facebook logo all have one thing in common - a bright blue color. From the coating of M&Ms to the threads of jeans, the color blue has been used ...

Denise Lambert has spent decades rediscovering woad — and coping with blue hands. By Felicia Craddock Reporting from Roumens, France On an overcast day late last year, Denise Lambert retrieved a ...