Two women from Libya 7000 years ago yielded first Sahara ancient genomes. Their ancestry entirely disconnected from sub-Saharan Africans. No gene flow across green Sahara despite animal migrations. Genomes show vanishingly low Neanderthal DNA, 10 times less than non-Africans. Mitochondrial DNA traces to extinct African population ancestral to early European migrants. Distinct from both sub-Saharan Africans and modern non-Africans. Site shows oldest African dairying via milk-fat pottery and early wild cereal domestication. Pottery resembles North African styles indicating cultural contact without genetic mixing. Herding technologies adopted without population influx. Green Sahara was corridor for ideas and tech, not people. More samples needed due to limited two genomes and regional dangers.