Dr. David Prentice, a scientist who has developed a keen sense for ethics, has written an accessible explanation of the differences between embryonic stem (ES) cells and induced pluripotent stem (iPS) cells on his blog.  He has a knack for explaining complicated scientific concepts in layman's terms enabling all to appreciate the complexity and intricacies of the rapidly developing field of stem cell science. And you don't have to spend years getting your PhD.

Dr. Prentice describes how iPS cells are rapidly replacing ES cells as the next big thing in stem cell research. Scientists who used to work with ES cells, and who have no ethical objection to the destrction of human embryos to do so, are switching to iPS cells becasue that is where the SCIENCE is leading them.

Read more here and get further educated on these complicated scientific concepts.