Medieval Africans Had a Unique Process for Purifying Gold with Glass (2019) (atlasobscura.com)
43 points by mooreds 3 hours ago | 13 comments
6143 points by mooreds 3 hours ago | 13 comments
612 points by 01-_- 3 hours ago | 0 comments
624 points by cratermoon 3 hours ago | 0 comments
633 points by 01-_- 3 hours ago | 0 comments
641 points by mooreds 3 hours ago | 0 comments
653 points by shachaf 3 hours ago | 0 comments
663 points by net01 3 hours ago | 0 comments
672 points by fallinditch 3 hours ago | 0 comments
683 points by dtaxer 3 hours ago | 4 comments
693 points by iamwil 3 hours ago | 0 comments
701 points by PaulHoule 3 hours ago | 0 comments
711 points by thoughtpeddler 3 hours ago | 0 comments
721 points by cloudwithkarl 3 hours ago | 0 comments
731 points by nmstoker 3 hours ago | 1 comment
741 points by 1mbsite 3 hours ago | 0 comments
751 points by todsacerdoti 3 hours ago | 0 comments
762 points by gradus_ad 3 hours ago | 0 comments
771 points by celaleddin 3 hours ago | 0 comments
781 points by surprisetalk 3 hours ago | 0 comments
792 points by surprisetalk 3 hours ago | 0 comments
801 points by ghuntley 3 hours ago | 0 comments
811 points by surprisetalk 3 hours ago | 0 comments
821 points by surprisetalk 3 hours ago | 0 comments
831 points by surprisetalk 3 hours ago | 0 comments
842 points by hughess 3 hours ago | 1 comment
851 points by slyrus 3 hours ago | 0 comments
861 points by surprisetalk 3 hours ago | 0 comments
87127 points by anigbrowl 3 hours ago | 43 comments
882 points by marc-thibault 3 hours ago | 0 comments
893 points by hoerzu 3 hours ago | 1 comment
90