Free Astronomy Magazine November-December 2016

4 200 to 4700 years ago, in the north- east of current Argentina, an imposing meteorite shower took place, which filled the soil with hundreds of tons of iron, in an oval area with at least 300 km 2 . The population of that area quickly started ex- ploring this unexpected resource in order to build weapons and various tools, and they transmitted to the next generations NOVEMBER-DECEMBER 2016