Dr Bas Hofs (KWR Watercycle Research Institute, Netherlands) explains how nanotechnology could contribute to water purification. Poor people in developing countries may, in the long term, benefit through access to clean drinking water. In this way...

Of all the Millennium Development Goals (MDGs), number 7 (ensure environmental sustainability) is perhaps the most important, globally speaking. Unfortunately, it is also the one most likely to be unmet (certainly not by 2015, as originally envisi...