The Sahara Desert was once filled with rivers, giant lakes and hippos. Scientists explain why it turns green every 20,000 years
- For most people, the Sahara is the ultimate symbol of endless sand, scorching heat and one of the harshest environments on Earth.
- Yet geology tells a remarkably different story.
- Beneath the dunes lie the remnants of ancient rivers, vast lakes and ecosystems that once supported hippos, crocodiles and thriving human communities.
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- For most people, the Sahara is the ultimate symbol of endless sand, scorching heat and one of the harshest environments on Earth.
- Yet geology tells a remarkably different story.
- Beneath the dunes lie the remnants of ancient rivers, vast lakes and ecosystems that once supported hippos, crocodiles and thriving human communities.
Sources: Times of India