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 361–390
CSEF · 2026
Earth & Environmental Sciences (Track 2) (Junior Division)
On June 13, 2025 a fire swept through an open space area near our homes. This caught our interest, and we decided to investigate. We hypothesized the plants which repopulated the burned regi…
CSEF · 2026
Plant Biology (Junior Division)
Aphids are small insects that negatively impact varieties of plants and cause complications to a plant’s health such as stunting plant growth and causing discoloration. Aphids carry and tran…
CSEF · 2026
Environmental Engineering (Track 2) (Junior Division)
MOTIVATION / PROBLEM: Access to water is a global issue that affects over four billion people. A lack of water-related infrastructure further worsens this issue. However, AWGs (Atmospheric W…
CSEF · 2026
Environmental Engineering (Senior Division)
Many pharmaceutical pollutants, such as diphenhydramine (DPH), commercially sold as Benadryl, can pass through wastewater treatment plants and accumulate in water bodies, where aquatic life,…
CSEF · 2026
Earth & Environmental Sciences(Senior Division)
Ants, given their size, function as ecosystem engineers, which are critically essential to almost all terrestrial environments. However, whether intraspecific and interspecific conflict amon…
CSEF · 2026
Chemistry (Senior Division)
This investigation explores how varying the mass of calcium carbonate affects the thermal insulation properties of a sodium alginate based xerogel. Biopolymer xerogels were synthesized using…
CSEF · 2026
Medicine & Physiology (Senior Division)
Seizures impact 10% of the global population, with epilepsy developing in 1-2%. Seizure duration is an important marker of severity, with longer duration leading to increased morbidity and m…
CSEF · 2026
Medicine & Physiology (Track 2) (Senior Division)
Triple negative breast cancer (TNBC) is a highly-aggressive cancer that is difficult to treat because it lacks estrogen receptors, progesterone receptors, and HER2 protein that drive the maj…
CSEF · 2026
Earth & Environmental Sciences (Junior Division)
Problem: Microplastic pollution requires effective removal methods. This project tested whether combining ferrofluid magnetic separation and ultrasonic filtration removes PETE from ocean wat…
CSEF · 2026
Medicine & Physiology (Senior Division)
Liver shunts can be a life-threatening disease in dogs and cats; these are abnormal blood vessels that bring blood returning from the intestines into systemic circulation, bypassing the live…
CSEF · 2026
Electronics & Electromagnetics (Senior Division)
Engineering Problem: In the area I live in, I always see roadkill, scraps/trash, potholes, and debris from accidents on the road. All of which could potentially cause accidents or even death…
CSEF · 2026
Environmental Engineering (Junior Division)
Title - IonReHydrant: Eco-Friendly Ion Exchange Filter to Treat Home Hydroponic Wastewater Names - Prathik Nemani, Jasmehar kaur Hydroponics is a water-efficient agricultural method that gen…
CSEF · 2026
Environmental Engineering (Track 2) (Senior Division)
Irrigation scheduling strongly influences crop yield and water productivity, yet practical adoption of “smart” scheduling methods remains limited because method performance varies across cro…
CSEF · 2026
Cognitive Science (Junior Division)
The purpose of my project was to better understand how context can shape people’s perceptions of other people, and to see if the role of context is different for different groups of people.…
CSEF · 2026
Biochemistry/ Molecular Biology (Junior Division)
Yogurt is made using a process called milk fermentation. During fermentation, bacteria break down lactose and turn it into lactic acid. This buildup of acid lowers the pH which results in th…
CSEF · 2026
Environmental Engineering (Senior Division)
In this project, we analyze the various microbes within a specific enrichment culture and analyze the effects of their ability to defluorinate. The main purpose of this project is to inform…
CSEF · 2026
Behavioral & Social Sciences (Junior Division)
The McGurk effect demonstrates audiovisual integration in speech perception: when auditory and visual syllables conflict (e.g., auditory /ba/ paired with visual /ga/), listeners often report…
CSEF · 2026
Product Science (Junior Division)
Aging research has led scientists to study natural compounds that may affect living organisms. Resveratrol is a plant compound found in foods such as grapes and berries and is known for its…
CSEF · 2026
Electronics & Electromagnetics (Junior Division)
Juvenile Idiopathic Arthritis (JIA) is the most common chronic rheumatological condition in children, affecting an estimated 300,000 children in the USA alone, with a global prevalence reach…
CSEF · 2026
Environmental Engineering (Track 2) (Senior Division)
Kelpos Robotics addresses the global prosthetic crisis, where high costs limit access to only 3% of low-income individuals, by engineering a modular, sustainable, and theoretically affordabl…
CSEF · 2026
Behavioral & Social Sciences (Junior Division)
This project investigates how social media use affects teen sleep, focus, mood, and academic performance. The question researched in this project is "How does using social media affect kids…
CSEF · 2026
Applied Mechanics (Senior Division)
Assistive grasping of slippery, delicate, or thin objects remains challenging for individuals with hand impairments. Current prosthetic hands and assistive grippers often rely on rigid linka…
CSEF · 2026
Medicine & Physiology (Track 2) (Senior Division)
Rehabilitation following knee injury is commonly guided by intermittent clinical observation and subjective self-assessment, leaving a critical gap in objective, continuous feedback during e…
CSEF · 2026
Applied Mechanics (Junior Division)
When flight testing different paper plane designs, it is important to maintain consistent launches of each plane to make fair comparisons. Manual methods are straightforward but are usually…
CSEF · 2026
Biochemistry/ Molecular Biology (Junior Division)
https://docs.google.com/document/d/1tn5tmgzB23CuLVm_JdctPO9ImQ3IXkAhN6UfprGVsMQ/edit?usp=drivesdk
CSEF · 2026
Alternative Energy (Junior Division)
When I see which one can produce more energy we can start seeing other things that can produce more power that will not affect the environment and l am starting with a lemon. I also want to…
CSEF · 2026
Environmental Engineering (Junior Division)
Organic dyes released into natural sources of water pollute the environment, threatening the ecosystems and human health. Spent coffee grounds and alginate are eco-friendly materials, which…
CSEF · 2026
Medicine & Physiology (Track 2) (Senior Division)
Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) affects 33.7% of American adults, yet early detection remains challenging because diagnostic methods like FibroScan® are expe…
CSEF · 2026
Electronics & Electromagnetics (Junior Division)
The Life Saver Helmet is a low-cost electronic system that uses an impact sensor to detect crashes. It also has an Arduino, which sends and receives signals.
CSEF · 2026
Biochemistry/ Molecular Biology (Senior Division)
Hormone-driven cancers, such as prostate cancer, rely on hormone receptor signaling for growth and survival. While hormone deprivation therapies are initially effective, prolonged treatment…