Every California Science & Engineering Fair project Fairfolio holds: 17,387 entries across 24 years, with the abstract, category and awards the fair published for each one.
CSEF coverage: available historical abstracts for 2002–2019; award-listed projects only for 2021–2025, without abstracts and with explicit labels where titles were not published, except that most 2023 winners carry the abstract from CSEF's archived public showcase; public showcase abstracts for 2026. The 2020 fair was canceled.
Counts cover every year of this fair and use its own category labels, exactly as the source published them. Each one links to that category's CSEF projects.
17387 projects · showing 91–120
CSEF · 2026
Physics & Astronomy (Junior Division)
Have you done any exercise today? If not, you should try out road biking, an exercise for anyone. The purpose of my experiment is to figure out what the fastest bike position is, so the next…
CSEF · 2026
Zoology (Senior Division)
The steady decline in bee population over the past several decades has led to an overall decrease in crop yields and poorer food quality. Today, there are no known tools available on the mar…
CSEF · 2026
Chemistry (Senior Division)
Honeybees face increasing stress from pesticide exposure, parasites, and poor nutrition, while honey is among the most frequently adulterated foods worldwide. This project investigates how p…
CSEF · 2026
Physics & Astronomy (Junior Division)
Bending Beams is a project to see how different liquids affect light refraction. The hypothesis is that denser liquids will refract more than liquids that are less dense. A homemade light re…
CSEF · 2026
Environmental Engineering (Track 2) (Junior Division)
Every year, California growers lose 17% of their crops to poor handling, and a shortage of 2.4 million workers makes harvesting difficult. I addressed this by designing and evaluating a sust…
CSEF · 2026
Medicine & Physiology (Senior Division)
Age-related hearing loss is associated with increased risk of cognitive decline, yet many predictive models rely on averaged hearing thresholds that may oversimplify clinically relevant audi…
CSEF · 2026
Behavioral & Social Sciences (Senior Division)
In May 2023 the Surgeon General of USA issued a warning about the concerning effects of social media (SM) on youth and adult mental health. This project is aimed towards analyzing the effect…
CSEF · 2026
Earth & Environmental Sciences (Junior Division)
Our project investigated on how we can find a better replacement to synthetic plastics. Our reason for this was to better the environment and make our effort in helping the world. For this p…
CSEF · 2026
Microbiology (Junior Division)
Plastic pollution of the human body is an increasing concern that requires a solution. One solution would be to introduce plastic digesting bacteria in our intestines to digest any microplas…
CSEF · 2026
Environmental Engineering (Track 2) (Junior Division)
According to the data obtained after completing my experiment, the three types of bioplastics (Corn Starch, Cactus, and Aloe Vera) complete the objective which is to create bioplastic that i…
CSEF · 2026
Environmental Engineering (Senior Division)
Widespread contamination of surface and groundwater systems from heavy metals, excess nutrients, and other hazardous pollutants has intensified the need for sustainable water remediation tec…
CSEF · 2026
Zoology (Junior Division)
We chose this project because we were curious whether the color of nectar really matters to hummingbirds. We decided to run an experiment for a week with three feeders each a different color…
CSEF · 2026
Computational Science (Senior Division)
In January 2025, severe drought conditions and strong Santa Ana winds powered a series of 14 wildfires that proved to be the most destructive in California history. These fires caused 16,000…
CSEF · 2026
Zoology (Junior Division)
This experiment examined blue light damage to Drosophila melanogaster eyes and climbing ability. Fruit fly vials were exposed to three conditions for 5 days: 25-watt blue light, 60-watt blue…
CSEF · 2026
Chemistry (Junior Division)
The purpose of this experiment is to test how the temperature of the water mixed in the luminol compound affects the amount of light produced in the luminol reaction. This mixture is used ve…
CSEF · 2026
Biochemistry/ Molecular Biology (Junior Division)
Title: Blue in Orange Juice This project studied how quickly vitamin C degrades when oranges are stored in a freezer, refrigerator, or at room temperature. It was hypothesized that freezing…
CSEF · 2026
Zoology (Junior Division)
Traumatic brain injury (TBI) is the leading cause of disabilities and deaths worldwide, with Americans experiencing 2.5 million hospitalizations and fatalities annually and $19B in economic…
CSEF · 2026
Zoology (Junior Division)
Have you ever wondered why some birds have weaker bones than others? In this experiment, I wanted to figure out if chickens that lay eggs would have lower bone density because they used calc…
CSEF · 2026
Medicine & Physiology (Senior Division)
Cancer pain affects 66% of patients during treatment and up to 90% with advanced disease (van den Beuken-van Everdingen et al., 2016), making morphine essential in treatment. However, clinic…
CSEF · 2026
Medicine & Physiology (Senior Division)
Eosinophilic Esophagitis (EoE) is a chronic, immune-mediated esophageal disorder that currently requires repeated invasive endoscopic biopsies for diagnosis and disease monitoring. The absen…
CSEF · 2026
Materials Science (Junior Division)
Cities are often warmer than nearby rural areas because of the urban heat island effect, where buildings, roads, and rooftops absorb solar radiation during the day and release heat slowly at…
CSEF · 2026
Applied Mechanics (Junior Division)
For our project, we built four prototypes for a DIY solar-powered water pump. Irrigation systems in large farms are not being used with energy efficient and environment friendly sources, so…
CSEF · 2026
Chemistry (Junior Division)
In this experiment, I tested how much chemical energy is available in different foods by measuring the heat released while the food items burned. The temperature change of the water was reco…
CSEF · 2026
Applied Mechanics (Junior Division)
My project goal is to construct a robotic mouth that is capable of mimicking human-like movements that occur during speech. This robot is made with various components like a motor and an Ard…
CSEF · 2026
Plant Biology (Junior Division)
Many acorns fall to the ground unused and end up wasted. This project set out to see if a homemade fertilizer made from acorns could work as well as natural fertilizers like bonemeal. The hy…
CSEF · 2026
Microbiology (Junior Division)
The objective of this project was to develop a low-cost, natural-ingredient dry shampoo for people with limited access to clean water and to evaluate its effectiveness under consistent testi…
CSEF · 2026
Medicine & Physiology (Junior Division)
Objective: My project objective was to determine how carbohydrates affect glucose levels during exercise as a Type 1 Diabetic. I chose this project because I wanted to do something I persona…
CSEF · 2026
Environmental Engineering (Senior Division)
In recent decades, air pollution has been responsible for one of the greatest environmental health risks to humankind, responsible for up to 7 million premature deaths annually. Indoor air p…
CSEF · 2026
Medicine & Physiology (Senior Division)
Cardiovascular disease (CVD) is one of the leading causes of morbidity worldwide, affecting over half a billion individuals globally and approximately 127.9 million adults in the United Stat…
CSEF · 2026
Product Science (Junior Division)
Problem/Question: This project investigates whether multi-sensor fire alarms have faster response times than single or dual sensor alarms under controlled fire simulations. Procedure: I used…