The Humble Amoeba Is Smarter Than You Think
Nautilus · 2026-07-28
Mycologist Nicholas Money, author of *A is for Amoeba*, argues that this seemingly simple single-celled organism, which can possess up to 100 times more genetic material than a human, is far more complex and crucial to understanding fundamental biological questions than commonly perceived. Despite its historical role as a basic model for cell structure, the amoeba remains enigmatic, challenging scientists with its movement mechanisms and vast, largely unsequenced genome. Money suggests amoebas exhibit a form of intelligence and even rudimentary consciousness, displaying sensitivity to their environment, predatory pursuit of ciliates, and evasive maneuvers against attackers.
Amoebas reproduce asexually, primarily through mitosis, rendering them effectively immortal as their lineage persists without genetic dilution seen in sexual reproduction. This evolutionary strategy, supported by their unusually large genomes with numerous gene backups, allows them to maintain genetic integrity, prompting questions about why sexual reproduction and death evolved in other life forms. Amoeboid movement, used by cancer cells during metastasis and observed in tumor spheres, highlights the amoeba's relevance to oncology. Additionally, certain pathogenic amoebas cause severe, often lethal, infections like brain infections, a risk potentially exacerbated by rising water temperatures due to climate change.
*The full article also explores the historical influence of amoebas on thinkers like Nietzsche and Freud, and the ethical implications of past scientific self-experimentation related to their study.*