John McCarthy looks at travelling to Yemen. Ginny Hill of the Royal Institute of International Affairs and travel writer Tim Mackintosh-Smith debate the delights and dangers of this ancient land; these days seen in the west as a source of terrorist activity but rich in Muslim and pre-Islamic culture. John also meets Richard Cohen who has travelled the world researching cults of the sun - from primeval solstice rituals to modern solar farms.
Producer: Harry Parker.