Multiscale modeling of multiphase and reactive fluid flow in deformable porous media, emphasizing the collective effect of coupled pore-scale mechanisms on the overall response at larger scales. I am particularly interested in the pore-scale origins of nonequilibrium—emergence of unstable, preferential pathways, hysteresis and rate-dependency, and their interplay with hydrodynamics, phase transitions and matrix alteration due to bio-chemo-mechanical processes such as fracturing, compaction, dissolution and precipitation. My research, which cuts across the interface of earth sciences, engineering and physics, is motivated by environmental and energy applications across scales, from filtration, desalinization or microfluidics to soil infiltration, evapotranspiration, contamination and remediation, sediment transport, enhanced energy recovery or carbon geosequestration.