Sanjay Wahal, PhD, is a seasoned sustainability strategist, systems thinker, and climate innovator with deep expertise in decarbonization technologies, bio-based materials, and circular economy solutions. With a strong foundation in chemical engineering and a career spanning advanced clean technologies, he has advised startups, Fortune 500 companies, and global investors on transitioning to low-carbon pathways and sustainable business models. Dr. Wahal is the founder and president of Decarbonization, LLC, an advisory and consulting firm at the intersection of science, policy, and market transformation. His work empowers institutions to reimagine carbon not merely as a liability but as a strategic and societal asset. He has collaborated with leading climate-tech ventures and impact investors to accelerate decarbonization through innovation, finance, and inclusive strategy. Alongside his wife, Anupama, he co-founded the Sanjay & Anupama Wahal Foundation, dedicated to championing scalable and equitable solutions to the global climate crisis. With a unique blend of technical depth, strategic insight, and an intimate understanding of India’s digital and policy landscape, Dr. Wahal brings both grounded realism and visionary clarity to the eCarbon™ Card concept. His frequent engagements with policymakers, corporate leaders, and civil society further enriches this book’s actionable, citizen-first approach to climate action.