This infographic shows what the world would be like with a population of just 100.
To see the statistics, click here: http://100people.org/statistics_100stats.php?section=statistics
Even with a world of just 100 people, one would die from starvation, 23 people would not have a shelter, and, 17 would be illiterate.
Compared to a population of 7 billion, there is not much of a difference.
Eye opening and interesting.