[Southack]

"He said some geologists believe that gigantic sea scorpions evolved due to higher levels of oxygen in the atmosphere in the past."

Such nonsense. To test such a theory, you can place a scorpion in an oxygen-rich container from birth to death.

Won't be any larger or smaller than its siblings. Nor will its offspring. Nor theirs.

Yet more reasons why "evolution" makes for lousy science.

[Toddsterpatriot]

Such nonsense. To test such a theory, you can place a scorpion in an oxygen-rich container from birth to death.

I think the point might be that the size of insects is limited by the relationship of their surface area to their volume.