This week, human ancestors engrave shells; mastodons are frozen out; ants clean the mean streets; elephants predict the weather; and invasive species aren't all bad.
CBC Radio ·
Shell with engraving made by Homo erectus. (Photo: Wim Lustenhouwer, Vrije Universiteit)
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Quirks and Quarks53:38Should We Welcome The Invaders?, plus The Demise of The Mastodon, The Rise of Prehistoric Human Culture, The Insatiable Appetite of Urban Ants, and more - 2014/12/06
