In past times, if your heart stopped beating, that probably meant that you Light at the end of a tunnelwouldn’t live to tell the tale. But modern medical techniques mean that many heart attack patients survive, and those who’ve been that near to death often say that they experience bright lights or other strange phenomena. Until now, doctors have struggled to understand why, but Jimo Borjigin looked into the question in a paper in PNAS this week. (Read more)