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Home > About ICSU > About us > Our offices & staff > Global secretariat

Global secretariat

The main ICSU Secretariat is based in Paris (20 staff in 2012) and ensures the day-to-day planning and operations under the guidance of an elected Executive Board. From time-to-time, individuals are seconded to ICSU from Members and join the secretariat for periods of between three months and three years. ICSU also has arrangements with partner organisations and some Members, whereby a staff member works on joint activities and is shared between the organisations.

ICSU has three Regional Offices—serving Africa, Asia and the Pacific, and Latin America and the Caribbean—with their own secretariat that is staffed locally (for more information see the appropriate pages in this section).



Steven Wilson

Executive Director

Steven Wilson is the ICSU Executive Director. He took up his position in April 2012. Previously, from 1998 to 2012, he worked for the Natural Environment Research Council (NERC), the main funder of environmental research in the UK. At NERC, prior to a period as the interim Chief Executive, he was the Director, Strategy & Partnerships with responsibility for the development and implementation of NERC Science & Innovation Strategy. As part of his role, he helped found the Belmont Forum of international environmental research funders, later becoming its co-chair and secured a number of national and international partnerships. Prior to this he was NERC Director of Earth Observation and, in this period, he led the British National Space Centre Earth Observation activities, represented the UK environmental science community at the European Space Agency (ESA), as well as Chairing the ESA Earth Observation Programme Board. Steven has also worked for the UK Met Office (1995 to 1998) where he developed and used simulators for future satellite instrumentation on the Office's Hercules research aircraft. Steven took his first degree at St John's College, Oxford (Chemistry) and his PhD at the University of Bristol, where his research focused on molecular photodissociation dynamics.


Tish Bahmani Fard

Assistant Executive DirectorTish Bahmani Fard

Tish holds the dubious distinction of being the longest serving member of the Secretariat, where she has occupied several posts and is now responsible for membership and general administrative issues.
In the dimly remembered time PI (pre-ICSU), she read philosophy, politics and English and had a varied career which took her from milk floats to wine cellars before arriving in Paris to embark on more serious matters.


Environment and Sustainable Development

Diana Greenslade

Science Officer

Diana joined ICSU in July 2013 to work on the implementation of the Future Earth program.

Prior to arriving at ICSU, she was at the Centre for Australian Weather and Climate Research (A partnership between the Australian Bureau of Meteorology and CSIRO) in Melbourne  where she was involved in research and development of marine forecasting systems, including wind-waves and tsunamis. Her PhD from the University of Adelaide is in Applied Mathematics and focussed on the assimilation of satellite data into wave models. Diana is also currently Secretary General of the IUGG’s Commission on Geophysical Risk and Sustainability.

Katsia Paulavets

Project Coordinator

Katsia joined ICSU in 2012 as a coordinator of the project that aims to strengthen the involvement of developing countries in setting and implementing the research agenda for global sustainability. Before joining ICSU, she worked for UNEP’s Division of Technology, Industry and Economics on building institutional capacities on emergency preparedness and chemical accident prevention, both at national and local levels. Prior to that, Katsia worked as a project coordinator at Lund University in Sweden, mostly for the capacity building programme “Energy for Sustainable Development”, designed for energy professionals in developing countries. Katsia holds degrees in environmental engineering, management and policy.


Rohini Rao

Administrative Officer

Rohini serves as administrative officer and works with the team in planning and coordinating activities related to sustainable development, Governance and Policy Committees. She joined ICSU in 1985 to assist with the Conference of the Committee on Teaching of Science and since then has assisted several ICSU Interdisciplinary bodies in their day-to-day activities and liaised with UNESCO and NSF on grants and contracts. She holds a Bachelor of Arts in History, Economics and Political Science, an MBA from the Institute of Management Studies in India, a diploma in ‘Creation d’Entreprise’ at the initiative of the Conseil Général des Haut de Seine, France and more recently, a diploma in Management Essentials from Cornell University in New York.


Anne-Sophie Stevance

Science Officer

Within ICSU, Anne-Sophie works on the design and implementation of “Future Earth”, a new strategic framework for global Earth system research. She holds a Master degree in political sciences, specialising in sustainable development policies. Anne-Sophie worked previously as an environmental project officer in a research consultancy and helped integrate engineering and scientific knowledge into local environmental policies. She also has experience in stakeholders’ management at local and European levels to support sustainability initiatives.



Scientific Planning and Special Projects

Maureen Brennan

Administrative OfficerMaureen Brennan

Maureen is originally from Dublin, Ireland. She has been working with ICSU since May 1986 as an Administrative Officer involved in, inter-alia, membership and back-stopping several scientific committees by organising meetings and following yearly budgets for each Committee. Maureen was attracted to ICSU because of its vast global membership and its multi-interdisciplinary activities. Some pare time activities outside ICSU are collecting school books for schools in Benin and Uganda and visiting these schools.


Vivien Lee

Assistant Science OfficerVivien Lee

Vivien trained as a hydraulic engineer and received a Masters degree from the National Taiwan University. She spent two years in Japan working for a water quality and environmental assessment company before returning to Taipei to work for the National Science Council (NSC), the main funding agency for academic research in Taiwan. At NSC she managed the Intellectual Property Rights of research results for NSC-funded projects, before spending five years working as a programme director on bilateral cooperation with France, the United Kingdom and Belgium. Vivien has been seconded for three years as part of an agreement between ICSU and the Academy of Sciences located in Taipei (an ICSU National Member).

Scientific Data and Information

Howard Moore

Senior AdvisorHoward Moore

Howard trained in zoology and holds a Ph.D. in Marine Biology. He worked in science publishing in the UK for almost 12 years before joining UNESCO in 1982. He developed and published UNESCO’s first World Science Report in 1993, and was responsible for the publication of subsequent editions. He was Secretary to the World Conference on Science (Budapest, 1999, in collaboration with ICSU), and in 2001 became Director of the Executive Office in the Natural Sciences Sector of UNESCO. In January 2003 he was appointed Director of the UNESCO Office in Venice – Regional Bureau for Science in Europe, with responsibility for the organization’s programmes aimed at supporting scientific communities in South East Europe. He has been Senior Advisor to the Executive Director of ICSU since his retirement from UNESCO in early 2006.



Communications and Information Technology

Yun-Kang Ahn

IT Officer

After working as an IT consultant, Yun-Kang joined ICSU in 2012. After training in mathematics and physics, he holds degrees in computer science and applied science to music. These led him to a PhD in computational musicology, which were completed during his work experience with other research topics like image processing or video compression and streaming.

Denise Young

Head of Communications

Denise Young joined ICSU in 2012 as Communications Manager. She has worked as a public relations consultant for the non-profit sector, a press officer at UNESCO's World Heritage Centre, and prior to that was a journalist with Reuters.


Johannes Mengel

Communications Officer/Web Editor

Johannes joined ICSU in November 2012 as Communications Officer/Web Editor. He holds a degree in Communication Design from the University of Applied Sciences in Hamburg and a Master’s degree in History of Art from the University of Cambridge. Before joining ICSU he has worked with DPA and Spiegel Online in Germany. Follow Johannes on Twitter.

Lizzie Sayer

Communications Coordinator, Future Earth

Lizzie Sayer joined ICSU in 2013 as Communications Coordinator for the Future Earth programme. Prior to joining ICSU Lizzie worked on development and communications for St Anne’s College, part of the University of Oxford, and as a researcher and a event coordinator for the Westminster Food & Nutrition Forum. She holds a degree in Modern European Languages (Edinburgh University, UK).

Administration and Finances

Alexandra Guennec

Payroll and HR Administration Officer

Alexandra joined ICSU in late 2013 as Payroll and HR Administration Officer. She holds a degree in Human Resources. Before joining ICSU, she practiced her profession in working for several chartered accountants.


Eric LeparmentierEric Leparmentier

General Services

Eric is in charge of general day-to-day maintenance and security at ICSU, as well as of supplies and equipment.



Natacha de Marchi

Natacha de Marchi


Natacha manages ICSU's financial matters. She joined ICSU in 1997,after holding several positions in an oil company (BP), in a leading marketing information company (AC NIELSEN) and in Chartered accountant (INFODIT).


Clare ThirlwayClare Thirlway

Head of Human Resources

Clare joined ICSU in 2009. She has a degree in History (Bristol University, UK) and an MBA in International Business (European School of Management – EAP/ESCP, Paris).  After obtaining her MBA, she worked in HR consulting.  Before joining ICSU, she spent 7 years at SHL France (Saville & Holdsworth), advising clients on hiring, promotion and staff development decisions, using objective assessment and development tools.  She has also worked as a trainer and as an arts administrator.

Nora Papp

Administrative Officer

Nora joined ICSU in January 2014 as an administrative officer to help coordinate preparations for the 31st ICSU General Assembly. She also assists with activities related to Science for Policy. Before joining ICSU, she worked for OECD’s Green Growth and Sustainable Development project.  Nora holds a Master’s degree in Economic Sciences.

Miia Ylöstalo-Joubert

Administrative Officer, Future Earth

Miia joined ICSU in October 2013. She serves as Administrative Officer for Future Earth initiative. Miia has previous experience in project coordination, in sales administration and in organizing meetings and conferences. She holds a Master’s degree in Health Sciences.

Committee on Freedom and Responsibility in the conduct of Science

Roger Pfister

Executive Secretary CFRSRoger Pfister

Roger Pfister is a political scientist and international relations scholar, having studied in Switzerland, the UK and South Africa, where he obtained his PhD. He has worked at the ETH Zurich and the University of Fribourg, where he was also involved in setting up research promotion programmes in the Western Balkans and in the South Caucasus. Roger has been the Executive Secretary for ICSU's CFRS since October 2010. Based in Berne, he works jointly for ICSU and the Swiss Academy of Sciences (SCNAT), where he heads the international section and whose generous support makes his position possible.

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