HumansWhy I am keen to get my hands on genetically modified purple tomatoes The first home-grown genetically modified food may be on the horizon, in the form of purple tomatoes, finds Clare WilsonRegulars
TechnologyStretchy material could make bandages change colour when getting loose A stretchy material developed for holograms and an obsolete photography technique from the 19th century have been combined to create a material that changes colour as its tension changes News