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Story summary
- Giulia Brachi added a pH 4 solution to Pyrocystis lunula, making it glow for up to 25 minutes.
- Wil Srubar embedded the algae in hydrogel and 3D-printed shapes that remained viable for weeks and retained 75 percent brightness after one month.
- Researchers say the carbon-negative light could power battery-free underwater robots, toxin sensors and glow-in-the-dark lighting, though Chris Howe warned scaling will be hard while Anthony Campbell noted the pH 4 stress.
