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Ars Technica Science

How fruit flies chase invisible ribbons of smell to get to their source

Scientists discovered that fruit flies use a more sophisticated method than previously thought to track scents in turbulent air. By creating a controlled environment where flies could experience artificial odor landscapes, researchers found that flies do not simply move upwind and cast about randomly. Instead, they follow the edges of odor plumes, adjusting their movement in a consistent, calculated way. This finding suggests that fruit flies have a more advanced ability to navigate complex chemical signals than earlier models had assumed.

What happened

Fruit flies navigate by following invisible chemical trails, even when the smells are broken up by wind.

Why it matters

Understanding how small brains track complex signals could inspire better robotics and search technologies.

Why it belongs here

This research shows how nature solves difficult problems, offering lessons for science and engineering.

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