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.

3140 projects · showing 2221–2250 2026 — clear year filter Clear all

CSEF · 2026

Protecting Cells from UV Damage

Biochemistry/ Molecular Biology (Junior Division)

Since ultraviolet (UV) radiation from sunlight damages the DNA of living cells, protecting cells is important to lead a healthy life. One way cells could be protected is through the use of n…

CYSF · 2026

Proximity Sensor

Our project is a proximity sensor. it can detect How far or close something is. If something is too close the red light and buzzer turns on.if its good and has distance it will not beep and…

CYSF · 2026

Purifying Plants

Gold Medal

Testing the carbon dioxide absorption of 6 different household plants over a time frame of 24 hours

CSEF · 2026

Purple Roots

Earth & Environmental Sciences(Senior Division)

Our project goal is to find out how effective water hyacinth roots are at removing microplastics from the water. We hypothesize that water hyacinth will be effective at removing microplastics,…

CSEF · 2026

Putting the "De" in Decaf

Chemistry (Junior Division)

Extraction and purification of caffeine is a common low-cost organic chemistry lab. Many protocols include recrystallization for purification and many use thin layer chromatography (TLC) to…

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