Peter holds a Master's Degree in Environmental Management and a PhD in Forestry and Forest Product Techniques.

He brings to UNEP more than 20 years experience as an environmental scientist, project manager and strategist with the US Government, academia, the UN Development Programme (UNDP) and, currently, the private sector where he collaborated closely with the US space agency NASA.

As a scientist, Peter has gained international recognition and respect, particularly in the field of environmental assessment. His career has been characterised by successes in applying environmental science, assessment and information to promoting and developing environmental policies at all levels. Peter is an American national.