Solid Waste Management, Plastic Biodegradation, Sustainable Environmental Management, Life Cycle Analysis, Hazardous Wastes, Solid Substrate Technology, Greenhouse Gas Reduction, MFA and POPs, Circular Economy, Extended Producer Responsibility, Waste to Energy.
Algal Biotechnology and Diversity, Coral-Zooxanthellae Climate Change Mitigation and Experimental Evolution
Green Transportation, Green Energy, Carbon Footprint Reduction.
Director of the UN Sustainable Development Solutions Network, Special Advisor to United Nations Secretary-General António Guterres on the Sustainable Development Goals, Director of the Earth Institute of Columbia University.
Social inclusion and sustainable practices by businesses and civil society