This article explores how nitrogen becomes available to organisms and what changes in nitrogen levels as a result of human activity means to local and global ecosystems. Nitrogen is one of the ...

What do a human, a rose, and a bacterium have in common? Each of these things — along with every other organism on Earth — contains the molecular instructions for life, called deoxyribonucleic ...

Human biology is the study of all aspects of the human organism including evolution, genetics, ecology, anatomy and physiology, development, anthropology, and nutrition, among others. A deep ...

Humans are having a highly detrimental impact on biodiversity worldwide. Not only is the number of species declining, but the ...