But as an experimental archaeologist with over a decade of experience studying and manufacturing stone tools, I can say that ...

Found in Ukraine, the fragments show signs of human manipulation—though researchers still haven't ruled out the possibility that they were shaped by natural forces ...

In these dusty frames stood a lone, dark rock — oddly shaped, deeply pitted, and unmistakably resembling a human skull when viewed ... Perseverance encounters is like a paragraph in Mars ...