Quote:
Originally Posted by Drunk Vegan
Such as?
It seems to me that given enough time the entire surface of the planet is eventually wiped clean, and even strong metals melt.
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That's why so many great discoveries come from digging
below the surface of the planet
Quote:
Originally Posted by Drunk Vegan
Even our nuclear waste would not be a strong indicator, as it would no longer be radioactive.
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Well, there exists evidence today that dinosaurs once walked this planet. And we're also pretty sure we know what happened which put an end to their era. So what's that..? 65 million years...?