Sarah Currie-Halpern is Co-Founder and Partner in Think Zero LLC. Previously she ran Solid Waste and Zero Waste Programs for the Mayor’s Office of NYC, where she helped develop the Zero Waste section of OneNYC and the Waste section of the recent 80x50 plan. Her efforts and work at the Mayor’s Office were focused around implementing the Zero Waste plan by increasing beneficial use of organics; encouraging waste reduction, reuse and donation; increasing commercial, school and NYCHA recycling and composting; reducing greenhouse gas emissions from waste; and developing or improving waste policy. She ran the multi-agency Zero Waste Steering Committee, co-lead the OneNYC Water Fountain and Bottle Refiller Task Force, developed and lead the Mayor’s Zero Waste Challenge, and pushed forward groundbreaking work around light pollution. 

Before working in Waste Reduction and Sustainability, Sarah ran her own firm, SAC Marketing, which did marketing and communications project management for companies in a variety of industries ranging from cleantech and environmental products & services, to real estate, design and construction.  

She is certified as a TRUE Zero Waste Business Associate by GBCI. Chair of the Manhattan Solid Waste Advisory Board (SWAB) and a Board Member of Earth Day New York and the R Baby Foundation, Sarah is deeply committed to environmental and social advocacy. She holds a B.S. from Boston University School of Management and a certificate from New York University.

Ushma Pandya Mehta is Co-Founder and Partner in Think Zero LLC.  She works with organizations to help them craft and achieve their sustainability goals. She has extensive experience in strategy development and execution. She is certified as a TRUE Zero Waste Business Associate by GBCI. 

Prior to Think Zero Ushma held senior management roles with American Express, Booz & Co. and Katzenbach Partners.  She has worked with environmental organizations including Environmental Defense Fund, Department of Environment of the City of Chicago and Acumen.

Ushma is on the board of the NYC chapter of New York League of Conservation Voters and was on the board of Sustainable South Bronx (including overseeing the for-profit subsidiary Cool Roofs that worked on cooling and greening roofs throughout NYC).  She holds degrees from Georgetown University, Columbia University and Harvard University. 


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waste REDUCTION, diversion & zero waste Consulting