Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

According to the new study, the chemical composition of the spherules most closely resembled contaminating coal ash from human industrial practices—not alien construction materials or even a ...

Over the years countless Superman comic books, TV shows and movies have shown the fabled Kryptonian crushing clumps of coal between the ... let's look at the chemical compositions of these two ...