A Summit about action and opportunity. The UN Climate Action Summit, being convened by UN Secretary-General on 23 September 2019 provides an opportunity for redefining people’s relationship with nature. ‘Nature-Based Solutions’ can harness nature’s capacity to reduce emissions, enhance resilience, and can offer a crucial response to climate change and sustainable development at the scale and pace that is needed: To make this transformation possible, the necessary actions must be clearly identified, along with robust implementation systems and finance on an unprecedented scale. The Summit also provides an opportunity of cooperation for all of us - from government, finance, business, civil society and international organizations - to contribute to collective efforts that will tip the balance. These include reversing climate change, implementing SDGs, delivering multiple economic, social and environmental outcomes, and benefiting lives and livelihoods everywhere.