The Evolution Debate

摘要

How did we humans come to be in the expanding, evolving universe known through astrophysics and cosmology? It is quite clear that we do not know everything about this process. But it would be scientifically untenable to deny that the human brain is a result of a natural process of the development of ever more complex chemistry in an evolving universe that is 13.7 billion years old and contains about 100 billion galaxies, each of which contains on the average about 200 billion stars of an immense variety. After the universe became rich in certain basic chemicals through the death of stars of various masses, those chemicals got together in successive steps to make ever more complex molecules. Finally, in some extraordinary series of chemical processes, the human brain came to be the most complicated machine that we know.