America: western people were there far before we previously thought it

https://www.sciencemag.org/news/2018/10/stone-spear-tip-may-have-belonged-first-americans?utm_campaign=news_daily_2018-10-25&et_rid=468644410&et_cid=2450774


http://www.sciencemag.org/news/2017/04/spear-tips-point-path-first-americans