Porous liquids?! What are they? Why do we care? Permanent porosity has been obtained by dissolving rigid, organic ‘cages’ in high concentration of large solvent to form permanent pores. The cool thing is that low viscosity is maintained at room temperature! As of now, the only known change is ‘an eightfold increase in the solubility of methane gas’- which in itself is amazing for liquids. This increase in gas solubility could even capture CO2 by exposing this crown-ether liquid to the atmosphere! This would be greatly helpful for CO2 sequestration- a huge problem that researchers are attempting to tackle to reduce CO2 emissions.