Newcastle disease isn't a major threat to US chickens, but that could change. New research finds clues to resistance in regular backyard birds.

DNA evidence from ancient skeletons is beginning to tell the complex story of herding and farming in East Africa.

Urine salts offer clues to how people went from hunting sheep and goats in the wild to managing them as livestock.

Agriculture is the leading contributor of pollution to the nation's water supply. Computer vision can now spot offending animal farms in satellite images.

Rather than environmental factors like temperature, the amount and quality of milk cows produce depends on an annual biological cycle.