There is much talk these days about the threat to our world from climatic change driven by the release of fossil carbon in the form of CO2. However, this is not the only pollutant gas released by the burning of fossil fuels (and from other sources), and one that is far less talked about is nitrogen. This week there is an international conference in Edinburgh reporting the results of a five year project (NitroEurope) funded by the European Science Foundation programme “Nitrogen in Europe”. 200 scientists/experts in the field produced “The European Nitrogen Assessment”, which explains the state of the threats to water, air and soil quality and the impacts on biodiversity and climate change in Europe, and highlights the possible solutions. I thought I would flag up this video which explains why should we care.