[ppod]

>And there's evidence that even though it's not conscious, humans are actually still capable of detecting Earth's magnetism.

There's nothing totally convincing on this is there? I followed the links and it seems to just be modulating EEG responses. That's not the same as "humans are capable of detecting". It's possible to measure unconscious capabilities behaviourally, e.g in blindsight experiments.

[sa1]

I guess the more accurate statement would be that human cells have the machinery to do it.