Search past science fair projects

38,465 real projects from ISEF, the Canada-Wide Science Fair, JSHS, AJAS, the Calgary Youth Science Fair and the California Science & Engineering Fair — searchable by meaning, and filterable by fair, year, category and award.

1677 projects · showing 31–60 Earth and Environmental Sciences — clear category filter Clear all

CSEF · 2026

Eco-Friendly Microplastic Removal

Earth & Environmental Sciences (Junior Division) First Award

Eco-Friendly Microplastic Removal Microplastics are plastic particles smaller than five millimeters that have been detected in drinking water worldwide. Their persistence and small size rais…

ISEF · 2026

From Hair to Habitat

Earth and Environmental Sciences

Polyethylene glycol (PEG) is a synthetic polymer commonly found in cosmetic products such as shampoos and conditioners. Its widespread use raises environmental concerns due to its accumulati…

CSEF · 2026

Healthy Soil, Healthy Farm

Earth & Environmental Sciences (Track 2) (Junior Division)

Have you ever wondered how to improve the quality of your soil? My family owns and farms an orange grove, and the success of our grove depends on maintaining healthy soil. That is why I want…

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