As Earth’s climate systems change, polar sea ice is becoming more granular in structure. University of Utah-led research reveals this type of ice is much less permeable than columnar sea ice, with important implications for geophysical processes. This is because water, heat and nutrients move less readily through granular ice than the ice it is replacing.

Scientists from Ocean University of China have crafted a 3D bimetallic MOF array material for electrocatalytic air sterilization, detailed in Engineering. The 0.3Co-MOF/Cu@Cu electrode boasts strong water stability and conductivity, killing 99.51% of E. coli in just 0.0026 s at 24 V and 1.5 m·s⁻¹ airflow, via electroporation and ROS generation, offering a promising indoor air purification solution.