Homo sapiens originated in Africa around 200,000 years ago. Around 70,000 years ago, climate change caused food and water scarcity in Africa, reducing the human population to only 2,000 individuals. However, humans survived due to being skilled hunters and toolmakers with advanced language abilities. Around 65,000 years ago, one tribe left Africa, migrating to other parts of the world like Arabia, India, and Europe. Another period of climate change during the last Ice Age 20,000 years ago covered northern regions in ice but humans again adapted and survived.