It has been a mystery how humans suddenly 'discovered' civilization around 8000 BC. But ask indigenous people the world over and they will state that, 12,000 years ago -- during a period called the Younger Dryas -- another culture lived alongside them. Described as unusually tall, fair-skinned, red-haired or blonde, these 'gods' knew how to bend the forces of nature, enabling them to built extraordinary megalithic temples and develop a comparatively...