Anthropology
noun
The study of mankind (人類) is known as anthropology.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
コウイチのお父さんの専門は文化人類学です。
Koichi's father's specialty is cultural anthropology.
研究対しょうのアフリカの民族に気に入ってもらうために、その人類学者ははだかになって村人と交流を始めた。
In order to get along with the African ethnic group that she wants to research, she started interacting with the villagers naked.
どうしてあなたの妹は人類学の授業を受けたかったのかな。
I wonder why your sister wanted to take an anthropology course.