Nanotechnology could help give millions clean drinking water. David J. Grimshaw outlines the potential, the progress and some of the risks.

Can nanosponges solve a continent's water contamination problems? Munyaradzi Makoni investigates.

Nanotechnology research could take off in India but as R. Ramachandran reports, there are obstacles on the runway.

Nanotechnology may be small, but it could have a massive impact on life in developing countries — once the problems are ironed out.