National Geography: A newfound male relative of the human ancestor "Lucy"  supports the idea that walking upright evolved earlier than thought, a new study says. … Scientists nicknamed the new A. afarensis fossil "Kadanuumuu," which means "big man" in the Afar language of central Ethiopia, where the fossil was found in 2005. The name refers to the fossil's height, which scientists estimate is between 5 and 5.5 feet (1.5 and 1.8 meters) tall. Read More…