Derek Walker serves as a Board Member of Climate Action Systems. Derek applies his diversity and environmental policy leadership experience to his role advising the development of Planet.
Derek Walker is the Vice President for the U.S. Region at Environmental Defense Fund, where he oversees a portfolio of policy initiatives aimed at achieving a fair transition to a net-zero U.S. economy, combating climate change, building resilience, and promoting equity and environmental justice. 
In 15 years at EDF, Derek has served as the organization’s Chief of Staff and led climate and clean energy work at the global, national and state level, including several years directing the organization’s work to shape and support implementation of California’s Global Warming Solutions Act. Derek was the long-time chair of EDF’s Diversity Committee, helping EDF create and implement its first-ever diversity strategic plan. 
Derek is also an Adjunct Professor of International Climate Change Law at Vermont Law School and is a member of the Early Years Climate Action Task Force. He received a B.A. in English from the College of William and Mary in Virginia and spent a year studying at University College, Oxford.