On 5 June (World Environment Day) 2007, UN Secretary-General Ban Ki-moon called on all UN agencies, funds and programs to become climate neutral and 'go green'. Since then, all UN organizations have been working together to put in place systems and procedures to measure and reduce the environmental impacts of the UN family. “I would like to see our renovated Headquarters complex eventually become a globally acclaimed model of efficient use of energy and resources.

On 25 October 2013, ESCWA and the Rafik Hariri Foundation joined hands in organizing "Water, Food and Energy Nexus Conference" at the United Nations House in Beirut. Speakers in the conference were Roula Majdalani, Director of the ESCWA Sustainable Development and Productivity Division (SDPD); Salwa Siniora Baassiri, Director-General of the Rafik Hariri Foundation; Nadim Khoury, Deputy Executive Secretary of ESCWA. The event’s keynote speaker was Dominic Waughray, Senior Director and Head of Environment and Sustainable Initiatives of the World Economic Forum.

Acting Executive Secretary of ESCWA Khawla Mattar signed on 23 April 2017 on behalf of ESCWA a Memorandum of Understanding (MoU) with Sudanese Minister of Trade Salah Mohamed Al-Hassan on behalf of the Ministry in order to provide a framework for inter-institutional dialogue and cooperation on matters of common interest in the fields of sustainable development until the end of 2019. The ceremony was attended by Sudanese Minister of Communication and Information Technology Tahani Abdallah Attia.
 

Implementing the Regional Initiative through presenting the findings of the regional climate modelling ensembles for the Arab Domain as well as the hydrological modelling component of the integrated assessment that builds upon the regional climate modelling outputs.