The science fiction blog io9 often delves into real science. They have a nice summary of the state of replacements for various organs. I was holding out for lungs, but since the scientists were dragging their feet I quit smoking instead. Timing is everything.
io9: Forget the Jetpack - Where Are My Replacement [...]

A Finnish man has been the recipient of a new jaw, courtesy of his stem cells and abdomen. And some doctors and scientists, of course. I read stuff like this, and then I notice that everyone else is talking about Brittney Spears. And I get a bit depressed. If they can [...]

Scientists have created a camera embedded in a pill can be easily swallowed and used to screen for esophageal cancer.
Article:
Science Daily: Camera In A Pill Offers Cheaper, Easier Window On Your Insides
I think its great that there are easier ways to scan for cancer. However, as more and more ‘machines’ are created at this [...]