You don’t need to lead a fly to water to make it drink.
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2010/04/12197.jpg?resize=300%2C185&ssl=1)
A new discovery by neuroscientists helps explain why. Researchers have illuminated the biochemical mechanism that fruit flies use to detect water in their environment.
The finding may lead to a better understanding of how all cells control their water content, and perhaps to similar discoveries in people.