Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
More than a billion people globally do not have enough clean water and 2.6 billion people lack adequate sanitation. Italian researchers in a region challenged by drought plan to remedy that at both the local and global scale.
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