Curious places in Botswana

70,000-year-old rock carving resembling a python's head, with hundreds of spearpoints ritually destroyed and burned behind it. This may be the world's oldest evidence of religious ritual - San Bushmen still revere the python as a rain spirit in this exact location.

Mormyrid fish generate electric fields to navigate murky water. Their electric organ discharges encode species identity, sex, and individual recognition.

Hunter-gatherer communities immune to optical illusions that fool everyone else. Growing up without right angles and carpeted rooms changes how the brain processes edges.