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 121–150 Earth and Environmental Sciences — clear category filter Clear all

ISEF · 2026

The Moon as the Earth's Mirror

Earth and Environmental Sciences

The state of the vegetation on earth is an important indicator of our planet’s well-being. In this project, we tested the hypothesis that the prevalence of smartphones and other cameras coul…

CSEF · 2026

Trapped Air: Investigating CO2 Buildup

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

Carbon dioxide, more commonly known as CO2, is a gas that naturally occurs as a product of human respiration or as an engine byproduct. An environment with too much CO2 can cause health issu…

CSEF · 2026

Water Mitigation Garden

Earth & Environmental Sciences (Junior Division)

I Investigated whether or not agricultural runoff could be mitigated by using a homemade bio-filtration system to limit pollution and improve wild fish habitat. I wanted to discover if a sim…

CSEF · 2026

What's Really in Your Water?

Earth & Environmental Sciences (Junior Division) Honorable_mention Award

I would like to test different water sources in Merced to figure out which are likely to have the most microplastics versus other particulates. Using two different identification methods, I…

ISEF · 2025

Anthocyanin in Zooxanthellae

Earth and Environmental Sciences

Zooxanthellae is the mutualistic microorganism that lives in coral and provides nutrients for the expansion of coral with the byproducts of photosynthesis. The main photosynthetic pigment is…

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