Volume 88 of Advances in Agronomy contains eight timely reviews on topics dealing with biodiversity, carbon sequestration, crop improvement, nitrogen dynamics, and the discipline of soil science. Discussions include but are not limited to: Agriculture, soil biodiversity, climate change and agricultural diversity; ways to improve soil aeration, oxygation and plant processes, and oxygation scenarios; and pre-sowing seed treatment as a means for improving germination, plant growth and crop yield. Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myraid of subject matter dealt with by this long-running serial.