Ice-age humans may have set fires that led to the extinction of large mammals across what is now Southern California.
'Like a bomb has gone off': Ancient humans may have set megafires that turned Southern California into an uninhabitable 'wasteland' for 1,000 years : Read more
'Like a bomb has gone off': Ancient humans may have set megafires that turned Southern California into an uninhabitable 'wasteland' for 1,000 years : Read more