> When it comes to direct evidence of an industrial civilization—things like cities, factories, and roads—the geologic record doesn’t go back past what’s called the Quaternary period 2.6 million years ago.
What a nonsense argument, unless they managed to build an industrial civilization without iron (https://en.wikipedia.org/wiki/Banded_iron_formation). It would be glaringly obvious if these ores had already been mined.
What a nonsense argument, unless they managed to build an industrial civilization without iron (https://en.wikipedia.org/wiki/Banded_iron_formation). It would be glaringly obvious if these ores had already been mined.