Dry water

A material comprising 95 percent water that exists as a dry powder could be the new hope for amelioration of rising atmospheric carbon dioxide levels, according to researchers speaking at the recent American Chemical Society meeting. The material, first identified in 1968 when it was used in cosmetics, it then "rediscovered" by UK chemists who spotted its potential for absorbing large volumes of CO2. The material is made up of tiny particles of silica within which water is trapped. Absorbed gases form hydrates within the silica particles, whether carbon dioxide or methane to be used as fuel.