Sons of the Clouds
More than 30 years since the end of Spanish colonial rule, the Sahrawi people are still awaiting self-determination and an end to Moroccan occupation. Toby Shelley reports from Mauritania, where a forgotten Sahwari population lives in a permanent state of transit

The Race for Nanoland
Is 'grey goo' about to eat the planet? Probably not, but there are real dangers with the development of nanotechnology that are not being addressed.