Scientists growing human brains in mice? It sounds like science fiction, but it's happening right now. Scientists have injected human embryonic stem cells into the brains of fetal mice still in the ...

In early March, Dr. Barb Petersen, a large-animal vet in Texas, began getting calls from the dairy farms she works with in the Panhandle. Workers there were seeing a lot of cows with mastitis, an ...

A genetically modified cow has produced milk containing human insulin, according to a new study. The proof-of-concept achievement could be scaled up to, eventually, produce enough insulin to ensure ...