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Why is the green Sahara desert today? What is under the sand of the Sahara?

The Green Sahara: A Lost World Beneath the Sand

The Sahara desert is not green today. It is a vast, arid region that covers most of North Africa. However, there is evidence that the Sahara was once much wetter, and that it may turn green again in the future.

The Sahara’s green past is known as the African Humid Period, which lasted from about 11,000 to 5,000 years ago. During this time, the Sahara was a land of grasslands, forests, and lakes. The climate was much wetter than it is today, and the region was home to a variety of animals and plants.

There are a number of reasons why the Sahara turned green during the African Humid Period. One reason is that the Earth’s orbit was different at the time. The Earth’s orbit is actually an ellipse rather than a perfect circle.. When the Earth is closer to the sun, it receives more sunlight, which leads to warmer temperatures and more rainfall. The Earth’s distance from the sun was a little bit closer during the African Humid Period than it is now.

Another reason for the Sahara’s greenness is that the Earth’s axis was tilted differently at the time. The Earth’s axis is tilted by about 23.5 degrees. This tilt causes the Earth to receive more sunlight in some parts of the year than others. The Earth’s axis was tilted more than it is now during the African Humid Period. This meant that North Africa received more sunlight during the summer months, which led to warmer temperatures and more rainfall.

Finally, the Sahara Mountains were not as high during the African Humid Period. The Sahara Mountains are a major barrier to rainfall, and they block moisture from reaching the Sahara desert. The Sahara Mountains weren’t as high as they are now during the African Humid Period.. This meant that more moisture was able to reach the Sahara desert, which led to increased rainfall and vegetation.

What is under the sand of the Sahara?

Under the sand of the Sahara, there is a variety of buried features, including ancient lakes, rivers, and forests. These features provide evidence of the Sahara’s green past, and they also offer clues about the future of the region.

For example, the discovery of ancient lakes suggests that the Sahara may be able to support life again if it receives more rainfall. The discovery of ancient forests suggests that the Sahara may be able to support a variety of plants and animals if it becomes more humid.

The buried features of the Sahara are a valuable resource for scientists who study climate change and the history of the Earth. They also offer hope for the future of the Sahara, which may one day turn green again.

The Sahara’s potential future

The Sahara is a dynamic region, and its climate has changed many times over the past few million years. The Sahara has been green in the past, and there is evidence that the Sahara may turn green again in the future. This is because the Earth’s orbit is slowly changing, and this is expected to lead to an increase in rainfall in North Africa. However, it is not clear when this will happen, or how much of the Sahara will turn green.

There are a number of factors that could lead to the Sahara turning green again. One factor is climate change. The Earth’s climate is warming, and this is expected to lead to an increase in rainfall in North Africa. This could lead to the Sahara becoming more humid, and it could support more vegetation.

Another factor that could lead to the Sahara turning green again is human activity. Humans are pumping greenhouse gases into the atmosphere, and these gases are trapping heat. This is causing the Earth’s climate to warm, and it could also lead to an increase in rainfall in North Africa.

The future of the Sahara is uncertain. However, there is evidence that the Sahara has been green in the past, and it may turn green again in the future. The Sahara is a dynamic region, and its climate is always changing.

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