The last glacial period lasted from 110,000 to 12,000 years ago. Since 11,700 B.C. we have been in an interglacial period, the Holocene, but we are not completely out of a glacial period.
At the beginning of the Paleolithic, hominins were found primarily in eastern Africa, east of the Great Rift Valley. Most known hominin fossils dating earlier than one million years before present are found in this area, particularly in Kenya, Tanzania, and Ethiopia.