For the past few months I've had a developing interest in, even passion for, biotech and bioethics issues. These would be subjects like cloning, stem cell research, the future of humanity via the creation of "Techno-sapiens" and chimeras (cross-species creatures). And all the public policy questions that come with the discussion. I've found this book tremendously helpful: Human Dignity in the Bioetch Century: A Christian Vision for Public Policy edited by Charles Colson and Nigel M. de S. Cameron. InterVarsity Press publishes it; IMHO, everyone concerned with these issues ought to read it.
Remember the old movie ca. 1960, The Time Machine based on the H. G. Wells story? Not the goppy remake but the original. Humanity millions of years from now, evolved into two species, one enslaving the other, the haves and the have-nots. Given the current pace of developments, it may not take millions of years for this to happen. Science fiction is a great way to read tomorrow's newspaper today.