Ethics in Science: stem cells research: Overview

Easy to understand information from How Stuff Works site. All four types of stem cells are discussed.

Information from the Mayo Clinic explaining stem cells and their purpose as well as the controversy surrounding them.

Extensive list of topics associated with stem cells all reviewed by senior scientists and written in easy to understand language.

Easy to understand and well set out explanation of what stem cells are.

This comprehensive site includes information about the nature of stem cells, reversing cell differentiation, a stem cell quick reference, stem cells in use and unlocking stem cell potential.

Information from the University of Utah about the nature of stem cells, the creation of, types, therapies, potential, research and the debate.

When scientists learned how to remove stem cells from human embryos in 1998, both excitement and controversy ensued.

Embryonic stem cells offer hope for new therapies, but their use in research has been hotly debated.
Arguments for and against the moral status of a human embryo.

One of the main reasons, stem cell and cloning research is controversial is that such research, particularly stem cells used for therapeutic purposes, requires harvesting unfertilised eggs from human females, which brings with it a lot of ethical problems.