Over 15,000 mounds ... give the Earth its continents and ocean basins, but Mars has no plate tectonics of its own,” Joe explains. “This means it’s difficult to explain why the southern highlands of ...

But Hopewell mounds were made with earth ... Later, it was credited to the Fort Ancient culture, which followed Hopewell, thanks to the carbon dating of some artifacts. But the most recent ...

The Martian mounds are also much older, having existed for billions of years, rather than millions. But McNeil’s analysis shows that the Martian mounds are likely the last remnants of ancient ...

Nowadays, students on the LSU campus pay little attention to the dramatic, sloping grassy backdrop on their path to class: the more than 6,000-year-old North American earthen mounds. The mounds ...

Mysterious mounds ... Mars' ancient past, scientists are uncovering the story of a planet that may have once been capable of supporting life. “Mars is a model for what the early Earth might ...