Nitrogen and Sulfur Contents of Animal Products and Live Animals—Sample Excretion Predictions The process-based, mass balance approach would begin by predicting nitrogen, carbon, and sulfur in manure ...

People all around the world feed animals, ranging from household companions for whom we control when, where, how, and what they eat to their free-ranging relatives, to garden birds and squirrels and ...

In some parts of the continental United States, you might drive through a nearly unchanging landscape for hours. Stretching for miles and miles, vast swaths of soil are dedicated to growing crops—corn ...

Feeding wild elephants might seem kind or exciting, but a new study warns it can lead to serious harm. Researchers at the University of California San Diego say that giving food to wild animals -- ...