The fixation of nitrogen - the conversion of atmospheric nitrogen to a form which plants can use - is fundamental to the productivity of the biosphere and therefore to the ability of the expanding human population to feed itself.  Meer

Understanding of biological nitrogen fixation has advanced with impressive rapidity during the last decade. As befits a developing area of Science, these advances have uncovered information and raised questions which will have, and indeed have had, repercussions in numerous other branches of science and its applications.  Meer