12-Year-Old Wins 3M Young Scientist Challenge for Algae and Aragonite Plan to Fight Ocean Acidification

Raji Doshi, a 12-year-old seventh grader from Connecticut, won the 2026 3M Young Scientist Challenge and a $25,000 prize for her coastal project that pairs algae with aragonite to lower ocean acidity. Aragonite is a calcium carbonate mineral that shellfish and coral depend on, so the approach directly targets the seawater chemistry disrupted by carbon dioxide absorption. Her project, which also earned top honors at the Connecticut Science and Engineering Fair, uses real experimental data rather than just classroom theory. Doshi worked with a 3M scientist mentor during the competition and says she was drawn to the challenge because it rewards clear communication and real-world impact. She also pointed to autonomous underwater vehicles as a key tool for monitoring ocean chemistry and carbon uptake in remote areas. While the idea is still at the research stage, it highlights a growing focus on ocean-based climate solutions and the role of young scientists in developing them.