Origin and Definition of Life

What is Life?

Probably the best place to begin our discussion of the Earth’s biogeography is to answer the following question. What is life? While the reply to this question may appear simple, scientists have actually spent considerable time pondering this problem. In fact, many scientists would suggest that we still do not have a clear definitive answer to this question. Part of this problem is related to the existence of viruses and other forms of microscopic things. Some scientists define viruses as very complex organic molecules, while others suggest they are the simplest form of life. [Read more] ...