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3. Is it ethical to clone humans?
4. Is it ethical to clone animals?
9. Should there be a limit on the number of children a person can have?
14. Is human activity contributing to global warming?
17. Should genetic engineering be allowed in an effort to eliminate diseases and birth defects?
19...cont'd: Henrietta Lacks died of cervical cancer in 1951, but her name has become associated with an immortal line of cells known as HeLa cells (the name derives from the first two letters of the patient's first and last names). Unbeknownst to Lacks, a doctor at Johns Hopkins University took a sample of her tumor, later offering it to researchers who saw the cells continue to multiply in culture -- up to this day. It was the first instance of a successfully established "immortal" cell line, although scientists remain baffled why the HeLa cells survived whereas others didn't [source: Skloot].
Since then, HeLa cells have been used in a number of groundbreaking medical experiments, such as the development of the polio vaccine and cloning studies. But the remarkable story of the HeLa cell line has been marred by some of the conditions surrounding it. Henrietta Lacks never gave permission for her cells to be given to researchers, nor were she or her family notified that they had.
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10. Should more be done to stop species from extinction?