Born in 1957 in Tékane, Mauritania, Thiaw holds an advanced degree in forestry and forest product techniques.[3]
Career
Thiaw worked in his country's Ministry of Rural Development for 10 years before joining the World Conservation Union (IUCN), where he served ten years holding different positions.[4]
Thiaw joined the United Nations in 2007 as Director of the Division of Environmental Policy Implementation (DEPI) at United Nations Environment Programme (UNEP).[5] From 2013 to 2018, he was Deputy Executive Director of UNEP at the level of Assistant Secretary-General, under the leadership of successive Executive Directors Achim Steiner and Erik Solheim. He was appointed to this position by United Nations Secretary-GeneralBan Ki-moon on 2 August 2013.[6] In this capacity, he played a key role in shaping the organization's strategic vision, mid-term strategy and programme of work, and strengthened collaborations with Governments and other environmental governing bodies, including the United Nations Environmental Assembly.[7]