Synopsis

This installment explores a scientific controversy surrounding five siblings from a Turkish family who exhibit a unique gait – they walk on all fours. In 2005, scientist Uner Tan characterized them as "genetic throwbacks," thrusting the family into a discussion about a potential link to a prehistoric period when bipedalism was not yet fully established. The program features perspectives from geneticist Sean Carroll and anthropologist Brian Richmond, who offer dissenting views on Tan's assessment