...recent high‐level initiatives highlight the importance of climate change, including the ground‐breaking encyclical of Pope Francis, the G7 countries' pledge to phase out fossil fuels or Barack Obama's new climate mitigation proposal. ...the impacts of policies in one of the fields on the other challenges need to be explored if truly sustainable solutions to global problems shall be achieved. Within the climate change focus of Global Challenges, we therefore invite submissions related to climate change of the highest quality, with a clear focus on the global view of the climate problem and with relevance for (global) climate policy or bottom‐up initiatives which are a significant step towards a solution of the climate challenge.