[Bryan Staley, Francis de los Reyes III and Morton Barlaz, «Effect of Spatial Differences in Microbial Activity, pH, and Substrate Levels on Methanogenesis Initiation in Refuse»] (scientificamerican.com)
Regional differences in the observed SST changes after volcanic eruptions are expected, partly because of spatial differences in climate noise. (realclimate.org)
That allowed the researchers to create spatial differences in the aggregates — a possible first step toward forming more complex structures with different tissue types such as vasculature and stromal cells. (sciencedaily.com)