A team of scientists came to this controversial conclusion by dating human footprints preserved by volcanic ash in an abandoned quarry in Mexico.
A team of scientists came to this controversial conclusion by dating human footprints preserved by volcanic ash in an abandoned quarry in Mexico.
对保存在火山灰中的人类足迹进行年代测定后，一个科学家小组得出了这一具有争议性的结论。这些火山灰是在墨西哥一个废弃的采石场被发现的。