Student changemakers: Advancing sustainability from classroom to community
In this series, NUS News explores how NUS is accelerating sustainability research and education in response to climate change challenges, and harnessing the knowledge and creativity of our people to pave the way to a greener future for all.
From food security to renewable energy and sustainable finance, a new generation of student changemakers is redefining what sustainability looks like. Though they may not come from traditional sustainability backgrounds, these students – hailing from different colleges, faculties, and schools across NUS – share one common goal: taking meaningful action on climate issues that matter most to them.
Whether it is addressing challenges in food systems, supporting the transition to electric vehicles or advancing green finance solutions, their efforts reflect the limitless potential of youth-led initiatives, strengthened by the rigorous academic foundation that NUS provides, in building a more sustainable future for all.
Cultivating ideas on food security from the ground up
Sustainability was not on his radar before university but the curriculum at the NUS College of Humanities and Sciences opened his eyes to a whole new world of interdisciplinary learning in sustainability education. Majoring in Geography — with its unique integration of human, physical, and political-economic perspectives — and minoring in Political Science and Geosciences provided Lei Hong Wei a better understanding of how diverse stakeholders interact in the fight against climate change.
Recounting his journey into environmental action, Hong Wei shared how he joined the NUS Students' Association for Visions of the Earth (NUS SAVE) in his first year before progressing to take on leadership roles in his second and third years of university. While he initially focused on sustainability metrics and reducing waste at student events like NUSSU Rag & Flag and Supernova, he soon found joy participating in gardening events and nature walks.
“I was trying out gardening at home during the COVID-19 pandemic in 2021 and was experimenting with different seeds and growth methods,” he recalled. “Seeing my chillies and long beans grow and eventually bear fruit was delightful, which made me really want to share the joy of gardening with my friends. While individual efforts in contributing to our nation's food security agenda may be minute, I thought forming a community first is essential.”
Feeling inspired, Hong Wei who was then the Co-Director of NUS SAVE’s Green Canteens cell, reached out and collaborated with the University Campus Infrastructure to establish a rooftop garden at the Education Resource Centre in NUS University Town in June 2023. The fresh produce harvested from the garden was used in plant-based cooking workshops aimed at promoting sustainable living among students. NUS SAVE also advocated for the installation of a rainwater harvesting system to help automate irrigation and provide additional water for the plants during extremely hot days.
Outside of school, Hong Wei contributes to an environmental non-governmental organisation by providing policy feedback on coastal reclamation projects, volunteers at a rooftop farm in Orchard, and guides public nature walks to promote environmental awareness. Most recently, he completed an internship with the National Climate Change Secretariat, where he examined how rising temperatures may increase cooling demand — and with it, emissions — highlighting the intricacies between climate, infrastructure, and resource use. After his graduation in July, Hong Wei hopes to work at the intersection of food security and sustainability.
Translating passion into action through EV charging solutions
After enrolling in NUS Computer Science in 2018, Benjamin Long made a bold decision to leave university and run his start-up full-time. In 2021, he decided to return to NUS with renewed purpose ─ to deepen his technical expertise so as to grow in his role as the Chief Technology Officer (CTO) of the start-up.
“I’ve always been fascinated by technology, and in my view, NUS is the best local institution for computing,” he shares. This time, Benjamin chose to pursue Computer Engineering instead, to gain a deeper understanding of both hardware and software. “The hands-on exposure helped me approach problems with more rigour and confidence.”
He cites IT2900: Technical Management and Leadership as one of the most impactful courses he had taken as it had helped him develop essential leadership qualities such as self-awareness, resilience, and empathy—which he now draws on when navigating complex multi-stakeholder discussions and communicating climate issues. He added that some of the most rewarding moments of his NUS journey came from engaging with its world-class faculty who expanded his worldview and reinforced the importance of pairing technical excellence with visionary thinking to address the climate crisis.
Driven by a desire to learn as much as possible, Benjamin joined the NUS Overseas Colleges programme in Thailand during his third year of study to immerse himself in the vibrant entrepreneurship scene. The experience provided insights into how local context shapes sustainability priorities across ASEAN, broadened his regional perspective and underscored the importance of cross-border collaboration.
Eager to apply what he had learned, Benjamin brought these valuable insights back to his start-up – Beep Technologies. The company pivoted during the COVID-19 pandemic to address a key challenge in electric vehicle (EV) adoption, namely, the fragmented charging experience where drivers must download multiple apps to access chargers operated by different networks. To tackle this, the start-up built a roaming network that aggregates various charging operators into a single interface. Its latest product — an "EV Charging" mini-app that is integrated within the AXS Drive app — allows users to access over 4,000 charge points across the region without the need to register for multiple accounts. Beep Technologies is also partnering with logistics companies to electrify their fleets, driven by a shared belief in building a greener future.
Although sustainability wasn’t Benjamin’s initial focus, his work has naturally evolved in that direction. “Reading the book “Our Choice” by Al Gore when I was a teenager was a turning point. It showed me that we can build a better world without sacrificing the environment through renewables, hydrogen and EVs.”
Set to graduate from NUS this July, Benjamin is grateful for the university’s academic rigour, which sharpened his skills and supercharged his entrepreneurship journey. Looking ahead, he is committed to continue creating meaningful environmentally-conscious solutions that make a lasting impact.
Bridging passion and purpose in sustainable finance
From a young age, Lee Xin Chun felt a deep connection to nature. Her childhood was filled with time outdoors, and fast forward to today, as a freediver, she witnesses first-hand the impact of climate change and pollution on marine ecosystems. These encounters have shaped her commitment to finding solutions that protect the environment while driving meaningful change.
Her passion led her to the Sustainable and Green Finance Institute (SGFIN), where she is currently in the final stages of completing her Master of Science in Sustainable and Green Finance. Despite the complexities and ever-evolving nature of sustainability, she credits the professors’ unwavering dedication in mentoring the next generation.
“The professors at SGFIN are conducting cutting-edge research into the growing field of sustainable finance. They teach us important skills to communicate the material importance of sustainability to corporates. They are the best people to learn from.”
Xin Chun attributes some of the most valuable lessons she learnt during her master’s programme to her classmates from around the world. Learning and collaborating with them allowed her to gain a deeper understanding of sustainability through diverse cultural and national lenses. Together, they participated in several international forums and conferences, where they benefitted from the sharing by leading experts and industry professionals.
Beyond academia, Xin Chun is also the chairperson of the Inter-University Environmental Coalition (IUEC), comprising members from various environmental groups across different universities in Singapore. IUEC aims to foster greater collaboration across the local universities, government agencies and other stakeholders so as to advance more systemic sustainability initiatives across the universities.
Believing that human connection is essential to long-term collaboration, under her leadership, Xin Chun fostered a culture of trust and mutual understanding through open and candid conversations, even among groups with differing motivations. One of the key stakeholders in this effort is the Ministry of Sustainability and the Environment of Singapore, with which she has been engaging since 2022 to strengthen youth-government collaborations.
Looking ahead, Xin Chun is currently busy involved in the planning of the upcoming Sustainability Youth Festival 2025, co-organised by IUEC and non-profit organisation EB Impact on 1 August 2025. The Festival will feature a sustainability hackathon and conference, and aims to engage over 1,000 students from primary to tertiary levels to deepen their understanding about sustainability. She is also looking forward to graduating in August and beginning her career in sustainable finance.