What could near-death experiences teach us about life, death and consciousness?

Seeing a bright light, floating above your body, being guided by an
angel. All of these are common elements of reported near-death
experiences, but what’s really going on? Ian Sample meets Sam
Parnia, an intensive care doctor and associate professor at NYU
Grossman school of medicine in New York City who has spent his
career exploring the boundary between life and death. He tells Ian
how he believes these experiences can be explained and what
medicine can learn from them. Help support our independent
journalism at theguardian.com/sciencepod