How does an ant with a brain smaller than a pinhead navigate miles of desert using visual memories that would be unrecognizable to a human eye? Andy Philippides reveals the elegant simplicity of insect navigation and why it could outperform GPS-dependent robots in denied environments.

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Philippides explains why studying ants in their natural environment is essential: laboratory stimuli produce fundamentally different neural responses than the real world. Desert ants like Melophorus bagoti are ideal subjects because they are social foragers that learn routes in a single trial, their behavior gives a direct readout of their nervous system, and researchers can track their entire foraging range. Crucially, ants do not use cognitive maps. Their route memories are insulate ...