After leaving Indonesia with his mother at a young age to live in the United States, and even though his family co-owned a sugar plantation, Ferron Haryanto never expected to return to the country to help heavily criticized palm oil, sugar, and coconut plantations become more sustainable. After graduating from university, he progressed steadily upwards in a highly successful career journey at leading consulting firms and then in high tech. ​ His brother was living in Singapore, however, and encouraged him to return to Southeast Asia. On a visit to Singapore, he met Lee Oi Kum, a director in a…