2017 SUMANI Board

Greta Golz, President

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Greta hails from Germany but has spent the last five years living, studying and working in Chicago and New York City. She hopes to use her background in economics, finance, and energy to work with and support companies that are contributing to a more sustainable future. She cares about environmental and social justice and spends the majority of her free time cooking and eating delicious plant-based food.

Debasmita Sarkar, Director of Projects

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Originally from Jamshedpur, India, Debasmita worked for 3 years in application development before moving to New York City. She seeks to use her development and technology expertise to help organizations become more sustainable. An explorer at heart, she’s known for her love of trying new things – from ordering the strangest item on the menu to making spontaneous trips to places around the city.

Marcela Diaz Jaramillo, Co-Director of Projects

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From Bogota, to Sydney to New York. Marcela spent 5 years living in Australia conducting research on climate change and coral reefs. She is passionate about the environment and wants to create a positive impact helping others use resources more efficiently. As a SUMA student, she hopes to use her environmental background to help companies achieve their sustainability goals. She is interested in working in corporate sustainability and strategy. Marcela loves the ocean, SCUBA diving, dancing and spending time outdoors.

Wei-Ling (Winnie) Sun, Director of Events

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Wei-Ling grew up in Taipei, Taiwan before moving to New York City in August 2017. She was an assistant consultant at EY Transaction Advisory Services, experienced in business valuation for M&A and accounting purposes. During her university education, she was the co-curator of TEDxNCU, organizing TED talk events and workshops. As a Couchsurfing host and traveler, she enjoys exploring different cultures. She aims to build on her financial and consulting background to help organizations achieve their sustainability goals.

Clayton Colaw, Director of Communications

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After spending 2013 teaching English in Cochabamba, Bolivia, Clayton returned home to Orange County, California and apprenticed in Permaculture design at the Ecology Center in San Juan Capistrano. Those two experiences put him on track for his current status as a Columbia SUMA student with dreams of starting his own Ecology Center and as SUMA Net Impact’s Director of Communications with a peculiar affinity for editing English in the written form. His fondness for the food excesses of New York City and reggae dancehall music can be summed up with his favorite quote, “A knife, a fork, a bottle and a cork, that’s the way we spell ‘New York’”.

Mercy Diaz, Director of Marketing

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A native of New York City, Mercy grew up volunteering in Van Cortlandt Park in the Bronx and with her high school’s environmental club on the Upper West Side. She graduated from CUNY’s Baruch College, where she majored in Marketing with a minor in Sustainability, was a leader of the ECO Club, and discovered her interest in corporate sustainability. She currently works at a wildlife conservation NGO while attending the SUMA program part-time. In her free time she enjoys eating her way around the city (particularly Mexican food) and studying foreign languages (particularly Korean).