The technical advisory board
These scientists oversee selection and assessment alongside our Trustees. They are leading experts on the atmosphere, the biosphere, land use, oceans and more.
Prof Joanna Haigh CBE (Chair)

Prof Haigh was Co-Director of the Grantham Institute at Imperial College from 2014 until her retirement in 2019. For the previous 5 years she was Head of the Department of Physics at Imperial College London. Prof Haigh is published widely in the scientific literature and has also contributed to numerous items to the written and broadcast popular media. She has been President of the Royal Meteorological Society, a Lead Author on the Intergovernmental Panel on Climate Change and acted on many UK and international panels. She is a Fellow of the Royal Society, the Institute of Physics, the City & Guilds and the Royal Meteorological Society and an Honorary Fellow of Somerville College Oxford. She was awarded the Institute of Physics Charles Chree Medal and Prize 2004, the Royal Meteorological Society Adrian Gill Prize 2010 and appointed CBE in the 2013 New Year’s Honours.
Prof Yadvinder Malhi CBE

Yadvinder Malhi CBE FRS is Professor of Ecosystem Science at the University of Oxford. His research focuses on interactions between the biosphere and climate change, including how the biosphere can be protected, stewarded and restored to enhance climate change resilience. He was Chair of the recent Royal Society Programme on Biodiversity, which among other things produced a recent briefing on the interactions between climate change and biodiversity. He is also a Trustee of the Natural History Museum (London), President-Elect of the British Ecological Society and a Member of the Environment Council of the First Minister of Scotland. In 2016, Prof Malhi was awarded the Marsh Award for Climate Change of the British Ecological Society. In 2018 he was awarded the Patron’s Medal of the Royal Geographical Society. He was appointed CBE in the 2020 Birthday Honours for services to ecosystem science.
Dr Mamta Mehra

Dr Mamta Mehra is an environmental professional with more than eleven years of expertise in climate change, agriculture, and natural resource management. She is currently serving as the Research Director of the Global Council for Science and Environment, where she works on spanning the boundaries between science and decision-making to strengthen the impact of durable solutions to environmental challenges. Previously, she has worked with Project Drawdown as a Senior Fellow and Research Program officer, where she was focusing on Drawdown solutions in the Land Use and Food sectors and managing the research fellowship program. She is also one of the senior analysts of the Keeling Curve Prize. Previously, Dr Mehra worked in different research capacities for Swiss Aid, UNDP-Australian Aid, and World Bank. Dr Mehra has authored many peer-reviewed papers and is one of the contributors to the New York Times bestseller book, ‘Drawdown: The Most Comprehensive Plan Ever Proposed to Reverse Global Warming’.
Prof Rosalind Rickaby

Prof Rosalind Rickaby is Chair of Geology, Department of Earth Sciences, University of Oxford. She received the 2008 European Geosciences Union’s Outstanding Young Scientist award and the 2010 American Geophysical Union’s James B. Macelwane Award for significant contributions to the geophysical sciences by an outstanding young scientist. In 2016, Ros received the Lyell Award of the Geological Society of London. She currently holds a Wolfson Research Merit Award from the Royal Society. Ros has pioneered an interdisciplinary blend of biology and chemistry to resolve questions of past climates, evolution, and the future of the phytoplankton. She has authored over 100 papers and co-authored the book, ‘Evolution’s Destiny: Co-evolving chemistry of the environment and life’.
We do the hard work
- We’ve screened over 20,000 charities for strong governance.
- We screen these charities by annual revenue, years in operation, charitable status, and more.
- We’ve scored hundreds of the best charities by impact, scalability, networks and co-benefits
- We perform further due diligence on operations, financial statements, governance documents, etc.
- We’ve admitted the highest scoring charities in six sectors to our Portfolio.
- We produce detailed Impact Reports.
- We re-score our Portfolio every six months.
- We replace organisations if we find stronger-performing charities.
