2026 SUSTAINABLE CITIES CHALLENGE SECONDARY EDITION

FROM LINEAR TO CIRCULAR

2026 Sustainable Cities Challenge

Our everyday products are too often made, used and thrown away. The 2026 Sustainable Cities Challenge (Secondary Edition) invited students to rethink design and production for a sustainable world, moving From Linear to Circular. Teams designed creative solutions that keep materials in use for longer, turning everyday waste into products with a second life.

Knowledge Partner

Singapore University of Technology and Design

SECONDARY LEVEL WINNERS

Click a photo or “Read more” to see the full project.

Takeaway Carrier

🏆 CHAMPION

Takeaway Carrier

Kyal Zin Lin Shine (Frederick), Kayden Chew Jia Jun, Rio Then Seng Lot, Villena John Chriswen and Aydriel Ng Kai Jun

Springfield Secondary School

Takeaway drinks often come with single-use carriers that are thrown away within minutes. The team designed a sturdy, reusable takeaway carrier from repurposed packaging material, keeping it in use for longer and cutting down on single-use waste.

Infinishelf

1ST RUNNER-UP

Infinishelf

Lee Ning Chin, Esther Chiang, Isabella Pranoto and Joylyn Loh

CHIJ St. Nicholas Girls’ School

Upcycled Backpack

2ND RUNNER-UP

Upcycled Backpack

Ong Trieu Vien, Callista Amadea Soesanto and Soh Xun Yu

Temasek Junior College

Fabric Bottle Carrier

MERIT

Fabric Bottle Carrier

Chloe Leong, Eunice Teo and Faith Goh

CHIJ St. Nicholas Girls’ School