Greenhouse gases and aerosols have an undisputed impact on climate. Long-lived greenhouse gases such as carbon dioxide (CO 2 ) and methane have a well-understood warming effect.

Air quality is not a local problem. Like clouds moving through the sky, pollution is transported from one location to another by wind patterns in the atmosphere .

Silver has been used as biocide for medical purposes since the 1930s. Today nanometric size silver particles are used to prevent unpleasant odour caused by bacteria in sport shirts or socks .

Carbon nanotubes (CNTs) are set to become an important material for the future. That’s because they are light, robust, and highly conductive, both electrically and thermally whilst still being chemically stable.

Dr. Anne Beeldens and colleagues at the Belgian Road Research Centre have tested air purification efficiency by TiO2 NP-containing pavement blocks on parking lanes in Antwerp.