![](http://evolution.berkeley.edu/evolibrary/images/evo/darwin_notebook.jpg)
A page from
Darwin's notebook...So the conclusion of available biological facts on earth are all the existing evidence points out to the following.
1) The life on Earth has evolved and that species share common ancestors. That means there must be a common ancestors/ a complex chemical reactions to start the life..
We don't know what it is.. Biologists are not arguing about evolution But they are trying to figure out how evolution happens and that job is not that simple. It involves collecting data, proposing hypotheses, creating models and ask the questions about the conclusions.. All sciences ask questions evolutionary biology is no exception to that rule.
Some of the questions that evolutionary biologists are trying to answer include: 1. Does evolution tend to proceed slowly and steadily or in quick jumps?
2. Why are some
clades very diverse and some unusually sparse?
3. How does evolution produce new and complex features?
4. Are there trends in evolution, and if so, what processes generate them?
Those are very common questions around evolutionary biologists But another exciting subject is doing Gedanken Experiments on Future Human evolution., in other words what would be the evolutionary future of Human race says after 100,000 years?? We know Human evolutionary history fairy accurate..
1) The term "human" in the context of human evolution refers to the genus Homo, but studies of human evolution usually include other hominids, such as the Australopithecines, from which the genus Homo had diverged by about 2.3 to 2.4 million years ago in Africa.
2). Scientists have estimated that humans branched off from their common ancestor with chimpanzees about 5–7 million years ago. Several species and subspecies of Homo evolved and are now extinct, introgressed or extant. Examples include Homo erectus (which inhabited Asia, Africa, and Europe) and Neanderthals (either Homo neanderthalensis or Homo sapiens neanderthalensis) (which inhabited Europe and Asia).
Archaic Homo sapiens evolved between 400,000 and 250,000 years ago3).
Recent African origin of modern humans, ROAM, or recent African origin hypothesis, which argues that Homo sapiens arose in Africa and migrated out of the continent around 50,000 to 100,000 years ago, replacing populations of Homo erectus in Asia and Neanderthals in Europe.
So in essence we are only 50.000 year old.. , Think about the planet future 100,000 years down the road what our future generations will be.... Now couple that to this thread floating in CEMB
Population grows from 1 billion in 1804 to 7 billion So if the population of earth is 7 billion now., what was population around the time of say Moses, Jesus or Muhammad?? Look at this graph
![](http://www.globalchange.umich.edu/globalchange2/current/lectures/human_pop/worldpop.jpg)
So can some of you guys estimate the population of Middle East during Prophet's time ??