Most people are against embryonic stem cell research mainly because they believe it is unethical to use aborted fetuses for research. The two main issues surrounding research are ethics (Cons) and benefits (Pros). In any scientific case, ethics must always be considered. But the use of fetuses is something of the utmost importance. Costs are generally measured based on people's feelings, morals, and knowledge about the topic under discussion. The use of aborted fetuses for stem cell research can have many positive outcomes, but also many negative outcomes; If the use of aborted fetuses for research can, in the near future, save lives, then it is research that should be supported, even though some people may see this type of research as something completely opposite to how they think about abortion. .What are stem cells and what do they do? Stem cells are cells made from “raw materials” of the body and are the only type of cells in the body that have “a natural ability to generate new cell types.” (“Stem Cell Transplant”) Stem cells have the potential to treat or cure a wide range of diseases and disorders, such as: Parkinson's disease, Alzheimer's disease, etc., affecting billions of people worldwide . With a topic like embryonic stem cell research, whether or not the costs outweigh the benefits is subjective, and the cost of living is impossible to measure. Since adult stem cells cannot do much for research or clinical use, research into ways in which embryonic stem cells can be used has become a necessity. Adult stem cells can only produce a limited number of cell types, while embryonic cells have an unlimited capacity for self-renewal and can be used to replace damage. Liberal politics. Np, nd Web. May 06, 2014. Kaufman, Dan S., and David Prentice. “Embryonic stem cell research: Experts debate pros and cons.” The survival doctor. The Survival Doctor, February 14, 2013. Web. May 04, 2014. “Obama on Lifting Ban on Embryonic Stem Cell Research - Obama Orders Lifting Ban on Embryonic Stem Cell Research.” About.com US liberal politics. US Liberals, May-June 2009. Web. 04 May 2014. "Religious Visions of Albert Einstein." Wikipedia. Wikimedia Foundation, May 18, 2014. Web. May 19, 2014. "Stem cells." Prezi.com. Network. 17 May 2014. “Stem cell research – The debate on the pros and cons”. Hubpages. Np, nd Web. April 21, 2014. “Stem Cell Transplant.” Stem cells: what they are and what they do. Np, nd Web. May 06, 2014. “Why Life Begins at Conception | NAAPC.” Why life begins at conception | NAAPC. Np, nd Web. 04 May 2014.