It may sound a little bit odd but one of the largest deserts in the world today, 'The Sahara Desert' once has been a grassland with dotted lakes just few thousand years ago. The temperature of the area was not so high as well.

The latest discoveries by the archeologists have suggested that the activities of human played a very crucial role in the rapid change of this climate. At the same time, the activities of the human have also affected the amount of rainfall as well. Therefore, it can be easily considered that the humans are on the verge of another climate change due to the activities.

Scientists have discovered the signs of plants and animals. At the same time, they have discovered the signs of the signs of old rivers as well. These signs were preserved under the huge sand of Sahara Desert.

According to the current thoughts that the Sahara desert formed due to a wobble in the orbital axis of the planet. It can be the main reason of the climate change in the area. But David Wright from Seoul National University has denied this theory. At the same time, he believes that climate has changed due to the human activities. He has also published his research on Frontiers in Earth Science.

Currently, the Sahara desert has covered 10 African countries and it is stretched up to nine million square kilometers.Though the average rainfall in the Sahara desert varies every year but generally it is very low. The average rainfall in the Sahara Desert is around 20 millimeters each year.

The weather around this area was completely different 11,000 years ago. But the monsoon of this area started to dry up almost 8,000 years ago and it turned into a desert. If the climate change in the Sahara Desert has occurred due to the natural reasons then there is a chance that, in few thousand years Sahara will be bloomed again with vegetation.