Sumarni Laman received her bachelor's degree in Chemistry Education from Palangkaraya University. She has expertise in biological resources and water management and is passionate about education. Her interest in environmental issues inspired her to volunteer for Ranu Welum in 2017. She became an official staff member in 2019 and serves as Youth Act coordinator. Sumarni is also the Communications & Public Relations Manager for Ranu Welum. She is currently running The Heartland Project - a national movement to raise awareness about forest issues through planting trees on forestland that was previously burned or mined. The Heartland Project has already engaged over 1000 participants and planted more than 2,500 trees. They also raise awareness about plastic pollution, engage people in climate action, and produce events to cultivate pride in Dayak traditions and culture.
Sumarni was both a participant and a coordinator at our Bali Collaboratory.