Each part of our solution addresses a different challenge. First, we propose a smaller-scale river version of the Ocean Cleanup system to collect visible surface waste.

Next, a floating capture curtain with modular netting collects microplastics and debris, while specialized hybrid drones survey and clean underwater areas.

Our drone features two functional attachments: Tomato River Bubbler, which releases air bubbles to stir up microplastics from sediments, and Tomato River Sweeper, designed to gather larger plastic pieces from both the riverbed and surface.

Our system is designed to adapt to any river environment. Drones use sonar and 3D scanning to map riverbeds and identify pollution hotspots, ensuring efficient and targeted cleanups. We collaborated with local experts, including a professor from the National Robotics Center and scientists from the Plastic Free Danube project, to refine our design.

We believe our innovative approach has the potential to significantly reduce riverine plastic pollution — not only in the Danube, but in rivers worldwide. Our project combines robotics, environmental science, and practical engineering to make a real impact.

Introducing our competition project: a captivating human-shaped statue that embodies the spirit of learning and discovery in the First Lego League. This innovative, kinetic sculpture features four distinct experiments, each representing a letter in STEM.

The first experiment showcases a mesmerizing plasma ball, illustrating principles of physics and electricity, which represents science.

Next, a holographic projection, that demonstrates the intersection of technology and visual representation, captivating audiences with its futuristic display.

Moving on to Engineering, the statue incorporates an Archimedes screw, a simple yet ingenious device that exemplifies principles of fluid mechanics and engineering design.

Finally, Chladni figures adorn the sculpture, showcasing the beauty of mathematics and the science of sound vibrations.