What caused the disappearance of the Nasca people in Peru?
Archaeologists have discovered that the destruction of forests pushed the ancient civilisation, noted for their compex line drawings on the ground that are visible only from the air, across an ecological tipping point.
The loss of the forests exposed the area to the impact of the cyclical El Nino phenomenon and affected irrigation systems, they found.
This should hold important lessons for us as our own forests vanish at an alarming rate.
Check out the BBC report here.