How a cow’s digestive system could revolutionise renewable energy A group of scientists believe that the key to effective biomass conversion lies in the stomachs of cows and elephants, with new ...

Digestive System: Cow Stomach Investigation Special | 6m 40s | CC Scientists can have an inside look at the digestive system by studying very special cows. Follow a University of Idaho scientist ...

It is thought cows evolved a supreme immune defence due to their complex and bacteria-packed digestive system. The US National Institutes of Health said the findings were of "great interest".