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RT @DeKaspia: Fascinating work of archeology in a fabulous part of northern Saudi Arabia. https://t.co/AMCH31qbqu
RT @DeKaspia: Fascinating work of archeology in a fabulous part of northern Saudi Arabia. https://t.co/AMCH31qbqu
Green windows: intervals of reduced aridity 400, 300, 200, 130-75 & 55 thousand years ago let Homo migrate into Arabia, bridging Africa/Eurasia https://t.co/Fl2nsy4QC7