30 – Earliest modern humans in Africa
300,000 years ago
While the earliest modern humans evolved about 300,000 years ago, it took quite a while for their populations to increase and for humans to expand across the African continent. By 250,000 years ago, humans were occupying a variety of territories in Africa. We can use DNA evidence to investigate the ages of human populations still living in Africa, which indicate that many of these populations first developed so long ago.
Image credit Erich Fisher.
Environmental and Climate Changes
Earth’s climate remains relatively stable with alternating glacial and interglacial periods