Sylwia Witzke is a designer, researcher and professor from Mexiko who is presenting in her talk the idea of design and sustainability by giving some examples of interesting projects. Sustainability is defined by the triangle model of sustainable development which is baed on the three columns society, ecology and economy. This reminds me on the talk I heard before of Prof. Dr. Burcin Cem Arabicioglu where he also mentioned such a kind of model in terms of sustainability. Witzkes aim is to bring more sustainable ways of living closer by defining sustainable development, but she talks also about the challenges to achieving the goals as designer.