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Humans & Society

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partial jaw fossil

EVOLUTION’S BITE  A researcher holds a 2.8-million-year-old partial jaw near where it was found in Ethiopia. The fossil’s discoverers say it represents the earliest known member of the human genus, Homo.

Gardasil 9

Gardasil 9, a vaccine that offers protection against nine types of HPV, has been recommended for use in 11- and 12-year-old girls and boys and in females ages 13 to 26 and males ages 13 to 21 who have not previously been vaccinated or treated with the three-dose series.

Big Brain

FOLD IT  A gene that only humans have can make the normally smooth outer layer of mouse brains develop folds similar to those in human brains (upper right center). The gene may have been important for the evolution of big human brains.

Humans & Society

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