The rarity of blue

The other day I was listening to Radiolab in my car (if you don’t know this program, give them a listen), and the topic of the episode was our perception of colors. I was struck by the statement that the color blue is exceptionally rare in nature and, as a consequence, philologists claim, this is…

Galapagos in red and blue

The very first animal that I saw upon landing in the Galapagos was also one that I found to be the most beautiful of all the organisms I encountered in the archipelago. Every rock within the splash zone of the shore was dotted with vermilion red, large crabs that moved with a slow, deliberate gait…