Biology
How Cells Know Which Way Is Up, Down, Front and Back, Close or Far
From insects to mammals, a small set of genes and proteins controls the orientation of the body’s cells and tissues
Stories by Jeremy Nathans
The Sciences
Color Vision: How Our Eyes Reflect Primate Evolution
Analyses of primate visual pigments show that our color vision evolved in an unusual way and that the brain is more adaptable than generally thought
Health
The Challenge of Macular Degeneration
Researchers have begun to identify the causes of this dreaded eye disease that targets the elderly
Mind
The Genes for Color Vision
Recently isolated, the genes encoding the color-detecting proteins of the human eye have yielded new clues about the evolution of normal color vision and the genetic bases of color blindness...
