Lucy’s species heralded the rise of long childhoods in hominids

Prolonged brain growth was already a feature for hominids before Homo genus members appeared

Lucy reconstruction

A more than 3-million-year-old hominid species called Australopithecus afarensis, represented here by an adult’s reconstructed skull, foreshadowed the long period of childhood brain growth typical of people today, a new study suggests.

Lorenza photography / Alamy Stock Photo

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