Year in review: Early human kin could shake up family tree
Origins of the genus remain fuzzy
![stone tool](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/122615_3_feat.jpg?fit=860%2C460&ssl=1)
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