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Shark Bycatch
- 50 million sharks are accidentally caught each year as bycatch.
- Bycatch, habitat change, and reef destruction threaten sharks.
Shark Repellent
- A new device uses sharks' Ampullae of Lorenzini to repel them from fishing hooks.
- This has reduced blue shark bycatch by 91% in trials.
Brain's Internal Compass
- Our brains use "head direction cells" to maintain an internal compass, like a 3D map.
- Recreating this compass could help treat Alzheimer's-related spatial disorientation.