(October 29, 2024) When Sirish Subash’s innovation, an AI-based handheld pesticide detector named PestiSCAND, was tested, it demonstrated an impressive 85 percent accuracy in detecting pesticide residues on fresh farm produce like spinach and tomatoes. The effectiveness of this innovative tool paved the way for Sirish’s victory at the 2024 3M Young Scientist Challenge. The Georgia teen from Gwinnett School of Mathematics, Science, and Technology won the $25,000 grand prize along with the title of ‘America’s Top Young Scientist.’
The 14-year-old credits his parents for instilling in him the curiosity that inspired him to design a pesticide detector. “My parents always insist that I wash fruits and vegetables before consuming them,” he shared in an interview. “I wondered, how necessary is this really, and how effective is washing? Does it actually work to ensure that produce is clean?” This curiosity led him to innovate the award-winning tool in the Challenge where he competed against nine top finalists. The final event was held at the 3M global headquarters in St. Paul, Minnesota, on Oct. 14 and 15.
Impact of 3M Young Scientist Challenge
The 3M Young Scientist Challenge, now in its 17th year, continues to inspire middle school students to apply STEM principles to solve real-world problems. As the United States’ premier science competition, it is administered by Discovery Education and 3M.
Each year, the top 10 finalists, comprising public and private school students from across the U.S. are evaluated through a series of challenges – including a presentation of their completed innovation project. Their work gets scored independently by a panel of judges.
Past 3M winners have gone on to give TED Talks, found nonprofits, file patents, and make it onto the Forbes 30 Under 30 list, highlighting the far-reaching impact of this platform.
Technology behind Sirish’s innovation – PestiSCAND
Sirish’s tool uses spectrophotometry to measure the wavelength of light reflecting off fruits and vegetables, combined with a machine learning model to analyse the data and detect harmful pesticides – all without damaging the food.
All one needs to do is download an app, point the tool at the food in question, and determine if an additional rinse is necessary. “That’s the main goal of PestiSCAND – to help people ensure that they aren’t consuming pesticides so they can avoid any associated health risks,” Sirish explained in an interview.
PestiSCAND is equipped with a sensor, power supply, display screen, and processor. By utilising a non-destructive method, it provides an efficient and reliable solution to the growing concern over pesticide contamination. The tool’s ability to quickly assess the safety of fruits and vegetables marks a promising step toward healthier food standards.
Journey of earning the title
The finalists faced a series of interactive challenges and were assessed on their creativity, application of STEM principles, passion for research, presentation skills, and ability to inspire. Each finalist was paired with a 3M scientist for one-on-one mentoring throughout the summer, guiding them from concept to prototype development. Sirish Subash was paired with Aditya Banerji, a senior research engineer at 3M’s Corporate Research Process Laboratory.
With Aditya’s support, Sirish refined his idea over the course of four months. Competing against nine other brilliant young minds, he showcased his ingenuity and presentation skills during the final events, ultimately securing the grand title and the cash award.
A dream comes true
The Indian origin teen has been passionate about science since the first grade and has dreamed of applying to the 3M Young Scientist Challenge for many years. A remarkable student, he even skipped the fifth grade. During his sixth-grade year, his family spent much of their time in India, which prevented him from setting up a project that year. In seventh grade, he applied, but things didn’t go as planned. In eighth grade, knowing it was his last chance, he made sure to apply again. “It has been a dream of mine to make it here,” said the Global Indian, who has just begun his studies in ninth grade.
Passion for writing
Beyond his passion for science, Sirish Subash is also an avid writer, having authored two books: Carbon Block Puzzle and Biochemistry: The Fun Way! – both available on popular platforms like Amazon and Barnes & Noble. For his first book, he set a record with the Asia Book of Records as the youngest non-fiction author at the age of 10.
His first book, Carbon Block Puzzle offers a concise and accessible way to understand the fundamentals of climate change – a crucial issue today where distinguishing fact from misinformation can be challenging.
“The effects of climate change are already happening. The first inklings of damage have already been done. Unless more people learn about climate change, the darkest days could come soon. That’s where Carbon Block Puzzle comes in,” Sirish mentions on his website. “The book educates readers on climate change and how to prevent it. Only if truth prevails will the right thing happen, and only then will humanity be safe from climate change.”
Aimed at young readers, Carbon Block Puzzle conveys its message in an engaging way, using the video game Block Puzzle as a tool for learning
His second book, Biochemistry: The Fun Way!, is an illustrated graphic novel designed as an introductory guide to biochemistry. The story follows fictional characters Burger Bob and his cousin SciKid, who runs a biochemistry business. The novel explores a wide range of topics, from foundational chemistry and amino acids to enzymes, proteins, sugars, polysaccharides, nucleic acids, cellular components, and the immune system, concluding with the complement system and practical applications of biochemistry in the real world.
Sirish Subash also runs a YouTube channel called SciKid Sirish, where he shares videos on various science topics and experiments, offering explanations and insights into each.
Looking ahead…
The Indian-origin Georgia teen aspires to go beyond his current accomplishments. He dreams of developing more devices and resources that will have a positive impact on people’s everyday lives. With a drive to educate and innovate, Sirish aims to continue making a difference, using his curiosity and talents to improve the world around him.
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