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Frozen light switches: How Arctic microbes could revolutionize neuroscience
In the frozen reaches of the planet—glaciers, mountaintops, and icy groundwater—scientists have uncovered strange light-sensitive molecules in tiny microbes. These “cryorhodopsins” can respond to light in ways that might let researchers turn brain cells on and off like switches. Some even glow blue, a rare and useful trait for medical applications. These molecules may help the microbes sense dangerous UV light in extreme environments, and scientists believe they could one day power new brain tech, like light-based hearing aids or next-level neuroscience tools—all thanks to proteins that thrive in the cold and shimmer under light.
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