Between 30% and 50% of the population believes in ghosts – literature, philosophy and anthropology can explain why.
From village healers to global brands, witches have long cast their spells over commercial transactions.
A number of U.S. mediums have claimed contact with the spirit of the late George Floyd. Their 'channelling' continues a tradition of white spiritualists whitewashing black lives.
Brazil's Valley of the Dawn faith is often dismissed as a cult. But many of the group's fantastical rituals are a recognizable reaction to this harsh world of inequality, loneliness and pandemics.
Sometimes the unknown is more appealing than the truth – and it has kept ghost hunters in business for generations.
John of God, the Brazilian spiritual leader accused of sexual assault, exploited women with a network of people dependent on him for money and power.
Ghost stories are often about the departed seeking justice for an earthly wrong. Their sightings are a reminder that ethics and morality transcend our lives.
We urgently need to contemplate the myths we tell about ourselves and technology as a way of evaluating the relationship between the two.
The Oujia board's origins were anything but evil. It emerged, in part, out of a longing to communicate with loved ones who had died during the Civil War.
Many of their extraordinary artworks are now on show in a new exhibition.
The idea of phantoms being comical is as old as ghouls.