 I'm a teacher, and that's what I am. I saw the advertisement on the Royal Society of Chemistry website, and thought that this was something that I'd really like to do. Now I'm retired, keep my mind occupied, and perhaps contribute something to the exercise. It's quite a responsibility. You've dealt with students in 30s and 40s, maybe 50s in Nigeria, but to reach hundreds of thousands of millions is a responsibility. So we've got to get this thing right. I think science is difficult because some of the scientific concepts are counterintuitive. They're not just common sense. So a lot of misconceptions build up when you are trying to learn science. So I think one of the things that I find very important is to try to overcome those misconceptions. And I think possibly one of the reasons why those misconceptions arise is that the science that is taught is not always taught in context, in a real global useful context. So I think my motto for science teaching is to set the science in a real everyday global context and to try to address the misconceptions that have been perpetuated possibly through science teachers as much as the media. There are a lot of children in this world of ours who have no access to education, and I think a few school enables them to gain some education. I think we've achieved a main objective. Most people in the Western world have got schools and plenty of resources, but if this can reach the parts that other education can't reach, I think we've achieved something really great. I think there's a certain amount of scientific understanding that's necessary to know how this world of ours works, how it functions, how ecosystems interact with the environment, a little bit about the chemistry of climate change and so on, which a lot of people, particularly politicians and people who are leaders of industry, do not understand. And without that understanding, they can't really understand the solutions that need to be made. So a scientific understanding, I think, is a human right and it's a human need so that the industrialists and the politicians can put the right policies in place. Chemistry is the science of matter and we have taken materials from the Earth, we've spread them around the planet, we've polluted the planet and we need desperately to understand what these materials are, how they behave, in order to make sure that we can develop a way of operating, if in a sense like natural ecosystems, they recycle materials and mankind has got to do the same, we can't keep digging things up, using them and throwing them away. And without a chemical understanding, a lot of people will not understand how that can be done or why it should be done. Biology is life on this planet and life on this planet, it works quite happily without mankind being around but as soon as mankind started to develop their industrial methods and so on, ecosystems began to be threatened and with the knowledge of biology, not only can we keep our own health and progress going in an ecologically friendly way but we can also hopefully protect what's left of the world's wonderful ecosystems. It's been a very, very worthwhile experience for me, I've sort of come to the end of my career and feel I've still got something I can provide and give and so on and it's been really great to have met you all and to be able to participate in this enterprise. Entertaining, enterprising and I've started to think of a word that's summed up the sort of humanitarianness of it the sort of the ideals, the idealistic maybe perhaps, maybe idealistic.