The Ways That Technology Has Changed the Definition of Death

From Vox:

In the 19th century, the moment one stopped breathing was the final indication of death, and a mirror held to the mouth, unfogged, was the indication that the soul had exited the body. Currently the measurement of death is a much more complicated one that involves a more industrialized and less religious view of the body: when mechanical and electrical activity ceases (the brain stops signaling, the heart stops beating and breath stops), one is pronounced dead.

But as we increasingly peer into the body with more powerful tools, these markers of death might not really indicate a final end.