A new study reconstructing the Arabian Peninsula’s ancient past adds clues to how early humans left the African continent.

Saudi Arabia, as the world's biggest oil exporter ... At sunset the drivers headed home, leaving behind splotches of oil on the sand and track marks scarring the dunes. But Amar said the gas-guzzling ...

Saudi Arabia, as the world's biggest oil ... leaving behind splotches of oil on the sand and track marks scarring the dunes. But Amar said the gas-guzzling sport was not necessarily in conflict ...

Az Zulfī (Saudi Arabia) (AFP ... leaving behind splotches of oil on the sand and track marks scarring the dunes. But Amar said the gas-guzzling sport was not necessarily in conflict with ...

Saudi Arabia Wearing a helmet and strapped securely into his four-wheel-drive ... At sunset the drivers headed home, leaving behind splotches of oil on the sand and track marks scarring the dunes. But ...