Interesting article. Especially the device used to measure the magnetic field
that they call a "SQUID". It can measure the magnetic disturbance a
submarine leaves in its wake, TWO weeks after the submarine has passed
that point.
https://www.vice.com/en/article/xgzb4k/venus-flytraps-have-magnetic-fields-like-the-human-brain (https://www.vice.com/en/article/xgzb4k/venus-flytraps-have-magnetic-fields-like-the-human-brain)