This session focus on novel or less recognized soil inner space processes in cultivated and urban soil. New or rediscovered processes include colloid mobilization, transport, and straining, colloid-facilitated chemical transport, competitive chemical sorption, water repellency and fingered flow, gas and chemical diffusion and dispersion in critical zone. The session includes measuring and visualizing the effect of water and air phase configuration and soil architecture on colloid and gas distribution. Emerging properties include gas diffusivity and dispersion coefficient, thermal and electrical conductivities, as well as novel measures of soil particle and pore distribution and preferential transport.