The retina of a painted turtle
Birds and some reptiles are known to have the most sophisticated color vision systems of any vertebrate. In the eye, light is focused onto the retina, which contains cone cells responsible for sensing color. In this retina from a painted turtle, cone cells contain oil droplets colored with carotenoids. These droplets act like tiny lenses, filtering specific colors onto cone cells. The amount of carotenoid in each droplet determines if the cone senses red, blue, green, or ultraviolet light.
Image by Dr. Joseph Corbo, Washington University in St. Louis School of Medicine.
Three unpublished stories by J.D. Salinger have been leaked online, seemingly from the eBay auction of a rare and unauthorized volume called Three Stories. The stories have previously been available only for viewing in research libraries.
Salinger would not have been pleased — in the 1970s, when fans tried to publish an unauthorized story collection, he told the New York Times that “I’m not trying to hide the gaucheries of my youth. I just don’t think they’re worthy of publishing.”
More in today’s Book News.
Sweet dreams by Bob21