As 175 world leaders signed the Paris Agreement at United Nations Headquarters today, Secretary-General Ban Ki-moon said the next critical step is to ensure that the landmark accord for global action on climate change enters into force as soon as possible. (Fuente: UN) Additional information UN says Paris Agreement on climate change must aim for long-term environmental stability. (Fuente: UN) List of 175 Signatories to Paris Agreement (Fuente: UN)