第31篇The Behavior of Magma

第76篇Mesozoic Seed Dispersal

第291篇Group Foraging

第56篇Guam and the Brown Tree Snake

第82篇The Economics of Academic Tenure

第425篇The Sumerians and Regional Interdependence

第629篇The History of Communication Technology

第250篇Grassland Environment

第354篇Changes in the Amount of Forest on the Great Plains

第322篇Naturalism and Nature in Art