Should we increase the cognitive capacities of fish if we can? If we enhanced a chimpanzee so that it had the same cognitive capacities as us, would it have exactly the same moral status as us? Is it morally preferable to kill a mouse or to destroy a robot? Could there be beings with a higher moral status than us? These are some of the questions Professor Shelly Kagan (Yale) answers in this interview with Katrien Devolder (Oxford) (Professor Kagan delivered the 2016 Uehiro Lectures on animal ethics at the University of Oxford. The Audio files of these lectures can be downloaded at http://www.practicalethics.ox.ac.uk/l….)
US scientists are creating novel life forms: “human pig chimeras”. These are a blend of human and pig characteristics. They are like mules who will provide organs to us. A mule is the offspring of a male donkey (jack) and a female horse (mare). Horses and donkeys are different species, with different numbers of chromosomes but they can breed together.
In this case, they take a skin cell from a person and turn it back in time to make stem cells capable of producing any cell or tissue in the body, “induced pluripotent stem cells.” They then inject this into a pig embryo. This makes a pig human chimera.
However they do a modification to the pig embryo first. They use gene editing, or CRISPR, to knock out the pig’s genes which produce an organ, say the pancreas. The human stem cells for the pancreas then make an almost entirely human pancreas in the pig human chimera. It functions like an organ mule. (The blood vessels are still porcine.)
In this way, your skin cell could grow a new liver, heart, pancreas, or lung.
This is a technique with wider possibilities: other US teams are working on a chimera –based treatment, this time for Parkinson’s disease which will use chimeras to create human neurones.
CRISPR is also credited with enhancing the safety of this technique, with the BBC reporting that a Harvard team were able to use the new and revolutionary technique to remove copies of a pig retrovirus.
Safety is always a major concern when science crosses new boundaries. But even if a sufficient guarantee of safety could be reached, are there ethical problems?
Recently I attended a fascinating Society for Applied Philosophy lecture by Shelly Kagan, entitled ‘What’s Wrong with Speciesism?’. Kagan began the lecture by explaining how, while teaching a course involving some of Peter Singer’s writings on non-human animals, he had begun to doubt the view, defended by Singer, that other things equal the suffering of animals matters no less than that of human beings. Continue reading
There is wide agreement that embryonic stem cell research holds unique promise for developing therapies for currently incurable diseases and conditions, and for important biomedical research. However, as it is currently done, the isolation of embryonic stem cells involves a process in which an early embryo is destroyed, which many find highly problematic.
This has resulted in what I refer to in my book as
The Problem. Either one supports embryonic stem cell research and accepts resulting embryo destruction, or one opposes embryonic stem cell research and accepts that the potential benefits of this research will be foregone. Continue reading
How the Danziger Story Advances the Abortion Debate in America: Actual Futures, Moral Status, and Common Ground
It has become commonplace in recent years to note that the ‘abortion debate’ in America has become entrenched. Indeed, there seem to be few issues in contemporary politics that elicit less common ground than the abortion debate finds in its stalwartly pro-choice and pro-life opponents. It is just as common, if not more so, these days to speak of the ‘attack on Roe v. Wade’ or ‘the attack on women’s rights,’ particularly in light of recent findings that more abortion restrictions were enacted between 2011 and 2013 in the U.S. than in the entire previous decade. Now more than ever, especially for the pro-choice movement, it is necessary to conceptualize novel approaches to the questions of the beginning, end, and quality of life that sit at the heart of the abortion debate. Here I examine a recent case and how it has the potential to advance this debate. Continue reading