Scientists have deliberated human cloning at least as far back as 1938 and the first laboratory successes in tinkering with DNA and human embryos took place in the early 1990s. As ethical and biological debate continues over the wisdom of ever crossing the human cloning scientific frontier, scientists have offered divergent opinions on just what cloning would mean for the human race.

 
HISTORY OF CLONING
TIMELINE OF HUMAN GENOME PROJECT
HOW HUMAN CLONING COULD WORK
DNA THE MOLECULE OF LIFE
A GLOSSARY OF TERMS