The Human Race

Lateefah Fatunbi

The human race deals with all the people in the world. Earth began around 6.4 billion years ago. Civilization is only about 6,000 years old, and industrialization started in the 1800s. Humans first evolved in Africa, and much of human evolution occurred in that continent. The first living things on Earth, known as prokaryotes, had first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
The fossils of early humans who lived between 2 and  6 million years ago come entirely from Africa. Most scientists currently recognize 15 to 20 different species of early humans. The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago. Many scientists think Earth has a maximum carrying capacity of 9 billion to 10 billion people.