The supercritical carbon dioxide process uses carbon dioxide under high pressure and temperature to remove caffeine from the beans. It might sound technical and seven days in liquid CO₂ sounds extreme, but it’s one of the cleaner and more efficient ways of producing decaf and is used more widely than you might expect. | James Hoffmann

Love it since school times. The coolest thing ever. Dry ice is the solid form of carbon dioxide (CO2), a molecule consisting of a single carbon atom bonded to two oxygen atoms. Dry ice is colorless, non-flammable, with a sour zesty odor, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H2CO3) Try chemistry at home: https://goo.gl/aXz11j | MEL Science