Sometimes, it takes the fresh perspective of a young mind to shake up the way we see the world.
Meet 14-year-old Sirish Subash from Snellville, Georgia—a kid with a vision and the determination to bring it to life.
Crowned “America’s Top Young Scientist,” Sirish created a handheld device that can detect pesticide residues on fruits and vegetables.
Think about that for a second—this is more than just an invention; it’s a wake-up call. His innovation challenges us to rethink what we put on our plates and raises an important question: how safe is the food we call ‘clean’?
How a 14-Year-Old Tackled Pesticide Risks in Produce
Sirish Subash, a 14-year-old from Snellville, Georgia, developed PestiSCAND, a handheld device to detect pesticide residues on produce, which won him the title of “America’s Top Young Scientist.”
This innovation stems from a fundamental concern over the safety of washing fruits and vegetables, which often fails to remove all pesticide residues.
Research indicates that a significant portion of produce carries pesticide residues, despite being washed, posing potential health risks like cancer and neurological disorders.
The motivation for Sirish’s invention came from a realization about the pervasive issue of pesticide contamination in our daily diet.
Studies have shown that pesticide residues can remain on fruits and vegetables, and these chemicals, particularly older, off-patent ones like DDT, are persistent in the environment and have been linked to various health issues.
The World Health Organization highlights that pesticides are crucial for increasing agricultural yield but also pose significant health risks if not regulated properly, necessitating strict residue monitoring and control measures.
Additionally, recent studies, including one from the MDPI journal, have underscored the prevalence of pesticide residues in produce from farmer markets, often exceeding the maximum residual limits set for safe consumption.
This has been particularly noted with certain pesticides in commonly consumed fruits like apples and vegetables like cucumbers.
PestiSCAND: The Game-Changing Invention Backed by Science and Mentorship
Image Credits: Twitter @SerrahL
Sirish Subash’s PestiSCAND device showcased its ability to detect pesticide residues on produce with notable precision.
Through meticulous trials, PestiSCAND achieved an accuracy rate exceeding 85% in identifying pesticide residues, specifically on spinach and tomatoes.
This was made possible by the device’s utilization of spectrophotometry and AI technology. Spectrophotometry measures how light at different wavelengths is reflected from the surface of fruits and vegetables, while the integrated AI model analyzes this data to determine the presence of pesticide residues.
The development and testing of PestiSCAND were part of Sirish’s participation in the 3M Young Scientist Challenge, where he was mentored by Aditya Banerji, a Senior Research Engineer at 3M’s Corporate Research Process Laboratory.
This mentorship was crucial as it helped refine the device from a concept to a fully functioning prototype, ready for real-world application. The competition’s framework provided an interactive and supportive environment, encouraging the finalists to apply STEM principles creatively and effectively.
Implications and Future Potential
The implications of this innovation extend far beyond the kitchen. As Sirish plans to refine PestiSCAND and make it widely accessible, there is potential for this technology to become a staple in households globally, empowering consumers to make safer food choices directly.
This device could also spur further innovations in food safety technology, encouraging other young scientists to develop new solutions to pressing global health issues.
The broader potential of PestiSCAND also includes its impact on environmental health, offering a tool that can help reduce the overall exposure to harmful chemicals, thereby supporting sustainable farming practices by highlighting the need for reduced pesticide use.
Sirish’s vision for the future of his invention aligns with his academic and career aspirations, as he intends to continue developing projects that tackle real-world problems, with a particular focus on applications that could address climate change and environmental issues.
Recognition and Awards

Sirish Subash, a ninth grader from Snellville, Georgia, has been awarded the prestigious title of “America’s Top Young Scientist” following his victory in the 2024 3M Young Scientist Challenge.
His innovative creation, PestiSCAND, is an AI-powered handheld device designed to detect pesticide residues on produce.
This significant achievement came with a $25,000 grand prize, which Sirish plans to use towards his higher education aspirations, notably at MIT where he hopes to continue developing impactful technological solutions.
The competition, a leading initiative for middle school students to address real-world problems through science and technology, showcases the critical importance of nurturing young innovators like Sirish.
His project, recognized for its practical application and potential impact on food safety, involved a meticulous process of development under the mentorship of Aditya Banerji, a senior research engineer at 3M’s Corporate Research Process Laboratory.
Throughout his journey, Sirish has demonstrated not only his profound interest in science and technology but also a commitment to making a positive impact on public health and safety.
His ongoing passion and determination serve as an inspiration to young scientists everywhere, highlighting the incredible potential of youth in STEM fields.
Source and image credit: Prince EA