Originally posted by Hanslune
reply to post by fixer1967

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Yes I've seen program several times. It doesn't state that all trace will be lost its says from ground view most will be lost and over grown - but it will still all be there in the ground. If it were true we'd find nothing from early humans who lived tens of thousands of years before 12,000 BP - yet we do, lots of stuff.

“Ladies and gentlemen, meet the Hthaask,” Kodo said. “They evolved
from omnivorous scavengers. When the Ship arrived, the Hthaask had an
advanced civilization that used metallurgy, vegetable and alcohol-based
fuels and geothermal power. The Hthaask hadn’t yet developed space flight
but they had already built large cities and had advanced computronics. They
were even sending radio messages into space the same way SETI has.”
“But…why is there no evidence of this?” Bloom asked. “Where are the
ruins of their cities? Where are their machines?”
“According to the Ship, most of the Hthaask culture was based on
biomechanical and biodegradable technology, including their cities,” Kodo
said. “Their civilization wasn’t based around fossil fuels, the way ours is. In
fact there were no fossil fuels back then. That we can’t find evidence of their metalworks and other undegradable products could owe much to simple geologic reformation. If they had nuclear fuel we’d never know it today as it would have long ago degraded into baser elements. We’ve dug up much of the earth in archaeology and in mining and construction…we may have stumbled across their technological remains and never known. Over the last sixty-eight million years the cataclysm and natural geological events have eroded away much of what the Hthaask had left behind as monuments.”

Originally posted by pjslug
reply to post by Hanslune

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Not to mention, all the crap we have up in space! If a global catastrophe completely buried all surface life, we would still have over a thousand satellites in orbit + the ISS. Future civilzations would detect these, as well as thousands of tons of junk and debris.

We have countless digital compendiums (on CD, DVD, hard drives, etc.) of our civilization that there would be enough traces left for a future civilization to know just how unenlightened and ignorant 99.999% of humanity was; obsessed with material wealth, religion, power, etc.