7) We need negative emissions
The current global climate protection goals are not adequate to limit the Earth’s warming to 1.5 degrees. We are a long way away from net-zero emissions. A further problem is that, in agriculture and in certain industrial sectors, it will be virtually impossible to eliminate all emissions by technical means. “Based on everything we know today, there is no scenario to keep global warming below two degrees without negative emissions,” explained Dirk Messner, President of the German Environment Agency (UBA). There is a wide range of possible measures to reduce carbon, as Andreas Oschlies from the GEOMAR Helmholtz Centre for Ocean Research in Kiel outlined. Firstly, on a physical level, by removing carbon at source, compressing it and pumping it into safe storage sites (carbon capture and storage). There is also the chemical approach, whereby carbon dissolved in the oceans binds with finely ground basalt rock. And finally biologically, through reforestation, since biomass is nothing more than carbon that has become solid. However, up to now, there has been no broad political will in this context. In fact, there is strong opposition – to CCS for example – in certain sections of the population and in the scientific community.
8) The battle for our planet will be won in the cities
Conurbations are responsible for roughly three quarters of global carbon emissions. At the same time, local authorities, as the providers of local self-government, are taking on many roles in the area of climate protection. They are pushing ahead with climate protection projects, guiding planning for climate-friendly construction areas and applying for subsidies. And, as service providers and motivators, they are in a position to influence carbon emissions both directly and indirectly, said Nadine Derber, Divisional Manager for Municipal Climate Protection at the Climate Protection and Energy Agency Baden-Württemberg. Obstacles have proved to be bureaucratic barriers and conflicts of interest, for example when deciding between greener policies and individual traffic requirements. Local authorities also have to comply with relevant regulations, such as building law requirements, and they have no power to amend these themselves. Munich city planner, Elisabeth Merk, underlined that greater control was needed at the higher legislative level.