Science, founded by Thomas A. Edison in 1880 and published by AAAS, today ranks as the world's largest circulation general science journal. Published 51 times a year, Science is renowned for its ...

THE endogenous fæcal excretion of calcium and magnesium is derived from the various digestive secretions and the desquamated epithelial cells of the alimentary tract. The relative proportions of these ...

Eating grass–sounds simple, right? But behind this everyday process lies a highly specialized system in many hoofed animals that is unique. Who would have thought that a cow or a deer needs four ...