Much of the Paleolithic Age occurred during the period in the earth's history known as the Ice Age. Around this time glaciers advanced and retreated many times. Because the people during the Paleolithic Age were living during such a harsh time they had to get adjusted to their environment so they started to depend on animals for their source of food. Since the paleolithic people were nomads and hunters and gathers, they followed their source of food. In this time their main source of food were the huge animals that traveled together such as mammoths. They used their environment to help them survive. The paleolithic people lived in caves and tents made from animal skin, their cloth were made from animal skin and leaves.
It is hard to imagine how Neanderthals or Homo sapiens could have survived without fire during the Ice Age. The first stone tools were probably used as projectiles or to hit with them like with a mace. Later, the primitive humans observed that broken stones had cutting edges that could inflict deeper wounds or cut animals into pieces. Step by step, people learned to hit stone