Search past science fair projects

20,037 real projects from ISEF, the Canada-Wide Science Fair, JSHS and the Calgary Youth Science Fair — searchable by meaning, and filterable by fair, year, category and award.

2128 projects · showing 2011–2040 2025 — clear year filter Clear all

ISEF · 2025

Utilization of Gel and Fiber Extracts From Opuntia ficus-indica Cactus as an Innovative and Sustainable Approach for Water Purification: An Eco-Friendly Solution for Reducing Turbidity and Enhancing pH Balance in Water Treatment Processes

Earth and Environmental Sciences

Water pollution is a global problem which requires sound, cost-effective wastewater purification. This study evaluates the natural effectiveness of Opuntia ficus-indica (prickly pear cactus)…

CYSF · 2025

Vaccines

We are going to talk to pharmacists about what they think about vaccines. We will also leave up a poster in pharmacies . The poster will have simple questions like why did you get your vacci…

ISEF · 2025

VADAM: VOC Analyte Diagnostic Aid Machine

Biomedical Engineering

Lung cancer (LC), responsible for one in five cancer-related deaths, remains a major public health challenge (American Lung Association, 2024). Early detection is critical, as 5-year surviva…

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