The Texas Medical Association is the latest large group to endorse embryonic stem cell research, keeping up the pressure on US politicians. The Houston Chronicle quotes the TMA: "Stem cells have the potential to provide cures or treatment for many devastating diseases. Ethical considerations, which often arise when a field of research is new, should be evaluated as research proceeds." Stem cell medicine will be a vital part of efforts to extend the healthy human life span over the next 20 to 30 years. Regenerative medicine will make it possible to repair much of the damage to specific organs caused by the aging process and age-related conditions - if research is allowed to proceed now, that is. So make sure you have your say in the matter!