Climate action begins at home. Parliaments and those who work in them can take concrete steps to reduce their carbon footprint, both as institutions and individuals. By adopting greener policies and embracing a culture of sustainability, parliaments and parliamentarians can help address the climate crisis and pave the way for stronger climate action. The IPU Secretariat has identified 10 key actions parliaments and parliamentarians can consider as they embark on the greening process, or to complement existing greening initiatives. These actions cover three categories: institutionalizing the greening of parliament, greening the way parliaments and their members work, and leading and fostering a culture of sustainable change. While a wide range of options to become greener exists and will continue to evolve with time, these 10 actions provide concrete entry points for more sustainable parliaments that lead by example when it comes to climate action.