"I feel immensely proud and humbled to join an organisation such as ClientEarth whose work is so critical to the wellbeing of our planet and its many diverse inhabitants. I became a lawyer because I have a strong belief in the importance of the rule of law as a transformative tool and look forward to working with ClientEarth's immensely talented team to use the law to combat the ills of climate change."

Maria-Krystyna Duval

Head of Climate

Maria-Krystyna Duval is ClientEarth’s Head of Climate. Before joining ClientEarth, she advised the New Zealand government on the economic, fiscal and wellbeing impacts of climate change policy. She advised on the Zero Carbon Act, reforms to the Emissions Trading Scheme and the Resource Management Act as well as aspects of the world’s first Wellbeing Budget. She also helped to design the Climate Implications of Policy Assessment tool, which requires all government decisions to take impacts on emissions into account. Prior to working in New Zealand, Maria-Krystyna worked on environmental policy issues in Hong Kong with a focus on water security and urban wellbeing. Before that, she was in private practice specialising in international public and private law in Hong Kong, London and Paris for many years. She is a native English and French speaker and fluent in Italian, German and Russian with intermediate Spanish and Mandarin. Aside from her law degree, she holds two Masters’ degrees in political science and economics and two Bachelors’ degrees in English and French literature.

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ClientEarth is an environmental law charity, a company limited by guarantee, registered in England and Wales, company number 02863827, registered charity number 1053988, registered office 10 Queen Street Place, London EC4R 1BE, a registered international non-profit organisation in Belgium, ClientEarth AISBL, enterprise number 0714.925.038, a registered company in Germany, ClientEarth gGmbH, HRB 202487 HB, a registered foundation in Poland, Fundacja ClientEarth Poland, KRS 0000364218, NIP 701025 4208, a registered 501(c)(3) organisation in the US, ClientEarth US, EIN 81-0722756, a registered subsidiary in China, ClientEarth Beijing Representative Office, Registration No. G1110000MA0095H836. All materials on this website have been prepared for general information purposes only to permit you to learn more about ClientEarth, our work and the expertise of our staff. The information presented is not legal advice, is not to be acted upon as such, may not be current and is subject to change without notice.


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