63 The age of a Western Stemmed projectile point implies that this culture overlapped with the Clovis culture in North America.
http://www.sciencemag.org/content/337/6091/223.abstract
62 The diet of Australopithecus sediba.
http://www.nature.com/nature/journal/v487/n7405/full/nature11185.html
61 Early Pottery at 20,000 Years Ago in Xianrendong Cave, China.
http://www.sciencemag.org/content/336/6089/1696.abstract
60 Late Middle Eocene primate from Myanmar and the initial anthropoid colonization of Africa.
http://www.pnas.org/content/109/26/10293.abstract
59 Fluvial landscapes of the Harappan civilization.
http://www.pnas.org/content/109/26/E1688.abstract
58 First dairying in green Saharan Africa in the fifth millennium BC.
http://www.nature.com/nature/journal/v486/n7403/full/nature11186.html
57 Dating of calcite crusts overlying art in Spanish caves shows that painting began more than 40,000 years ago.
http://www.sciencemag.org/content/336/6087/1409.abstract
56 First wave of cultivators spread to Cyprus at least 10,600 y ago.
http://www.pnas.org/content/109/22/8445.abstract
55 Reconstructing the origin and spread of horse domestication in the Eurasian steppe.
http://www.pnas.org/content/109/21/8202.abstract
54 Nest-building orangutans demonstrate engineering know-how to produce safe, comfortable beds.
http://www.pnas.org/content/109/18/6873.abstract
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