A Bird Flu Outbreak is Spreading among Cows in the US. Scientists are Hunting for Answers

AMES, Iowa (AP) — At first glance, it looks like an unassuming farm. Cows are scattered across fenced-in fields. A milking barn sits in the distance with a tractor parked alongside. But the people who work there are not farmers, and other buildings look more like what you’d find at a modern universi...