Year in review: Early human kin could shake up family tree
Origins of the genus remain fuzzy
TOOL TIME One of several significant hominid discoveries in 2015, this 3.3-million-year-old fashioned stone from Kenya suggests early hominids used tools before the Homo genus evolved.
MPK-WTAP
Scientists trying to untangle the human evolutionary family’s ancient secrets welcomed a new set of tantalizing and controversial finds this year.