Climate change is already having an impact on our lives and we know it is something we will have to deal with for many decades to come. We have seen how data and information are important to address a pandemic. We will need much more to mitigate the consequences of climate change, to adapt to it, and make our social and physical infrastructures resilient. Since 2019, with its European Green Deal, the European Commission and the EU member states have committed themselves to a plan to reduce the net greenhouse gas emissions by at least 55% by 2030, compared to 1990 levels, and to make Europe “the first climate-neutral continent by 2050”. The EU plan requires a huge amount of data and ingenuity to understand which policies can work better and where, and to monitor their effectiveness. A fundamental aspect of the strategy is an open and free access to the data and the tools to process, analyze, integrate and visualize it. In this meeting we will see some of the most relevant data sources of satellite imagery and other datasets and some open source tools that are used by space agencies and research institutions to collect and analyze the data.