Educational DVD: 'Nanotechnology: an introduction' (25 min) for high-school students. Explains what nanotechnology is, the special properties of nanoparticles, uses to create hydrophilic and hydrophobic surfaces, uses of lasers in nanotechnology and issues raised by nanotechnology. Presented in clear chapters. Teacher notes also available. Produced in 2008 by science and technology specialists reesfilms.com