Human cloning is the creation of a genetically identical copy (or clone) of a human. The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissue. It does not refer to the natural conception and delivery of identical twins. The possibility of human cloning has raised controversies. These ethical concerns have prompted several nations to pass laws regarding human cloning.
Two commonly discussed types of human cloning are therapeutic cloning and reproductive cloning.
Therapeutic cloning would involve cloning cells from a human for use in medicine and transplants. It is an active area of research, but is not in medical practice anywhere in the world, as of 2022. Two common methods of therapeutic cloning that are being researched are somatic-cell nuclear transfer and (more recently) pluripotent stem cell induction.
Reproductive cloning would involve making an entire cloned human, instead of just specific cells or tissues.
1998Jan, 12
Nineteen European nations agree to forbid human cloning.
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Events on 1998
- 4May
Unabomber
A federal judge in Sacramento, California, gives "Unabomber" Theodore Kaczynski four life sentences plus 30 years after Kaczynski accepts a plea agreement sparing him from the death penalty. - 6May
Houston Astros
Kerry Wood strikes out 20 Houston Astros to tie the major league record held by Roger Clemens. He threw a one-hitter and did not walk a batter in his fifth career start. - 26May
Ellis Island
The Supreme Court of the United States rules that Ellis Island, the historic gateway for millions of immigrants, is mainly in the state of New Jersey, not New York. - 4Jun
Oklahoma City bombing
Terry Nichols is sentenced to life in prison for his role in the Oklahoma City bombing. - 5Jun
General Motors
A strike begins at the General Motors parts factory in Flint, Michigan, that quickly spreads to five other assembly plants. The strike lasts seven weeks.