- Birds’ navigation using Earth’s very faint magnetic fields suggests an incredible level of sensitivity.
- There’s reason to think that sensitivity may be based on quantum entanglement in cryptochrome in their eyes.
- Identifying the role of quantum physics in biology could lead, well, who knows where?
Okay, this is far from confirmed, but it’s pretty radical, and exciting. It’s a possible and plausible answer to a question that’s puzzled biologists ever since the manner in which birds navigate became apparent. The question is: How can birds possibly be able to perceive and follow something as faint as the Earth’s magnetic field? The possible answer? It may be that they perceive it through the interaction of entangled quantum particles in their eyes.