Sahara desert climate alters every 20,000 years

The video explores the Sahara Desert's historical climate changes, suggesting it once thrived with nature. Researchers analyzed marine sediments from West Africa, revealing a 20,000-year cycle of dry and wet periods. These changes are linked to Earth's axial shifts, affecting sunlight exposure and monsoon intensity, leading to alternating arid and green phases in the Sahara.

What evidence do researchers use to suggest that the Sahara Desert may have once flourished with nature?

How often does the climate of the Sahara Desert alter between dry and wet conditions?

What causes the climatic pendulum effect in the Sahara Desert according to researchers?

What happens to the Sahara's climate when the Earth tilts to receive maximum sunlight?

Describe the changes in the Sahara Desert's climate when it receives less sunlight.