According to Peggy Hill, a biologist from the University of Tulsa who organised the symposium, work on seismic signalling is blossoming.

ECONOMIST: Extra sensory perception

As for the impact on viewers, the effect of disturbing and violent images is hard to measure, said Elana Newman, who teaches psychology at the University of Tulsa and is a specialist in psychological trauma.

CNN: Neda: Latest iconic image to inspire

W. Coburn School of Law, at Oral Roberts University, in Tulsa, Oklahoma.

NEWYORKER: Leap of Faith