The typical life of an egg-laying chicken is beginning to change dramatically. Ninety percent of the eggs we eat come from chickens that live in long lines of wire cages, about eight birds to a cage.

Lice have been found feeding on the skin and blood of free-range chickens, which are infected at much higher rates than caged flocks. This finding could have implications for states like California, ...

Forbes contributors publish independent expert analyses and insights. Christine Ro is a journalist covering science and development. Not long ago, Manjunath Marappan says, all chickens in India were ...