[ceol]

Well, it recovered pretty well after a 6 mile wide rock going millions of miles per hour hit it right in the face and cause one of the biggest extinction events in its history.

If that didn't destroy its habitability for good, I'm not sure we'd be able to do it.

[autotravis]

> "If that didn't destroy its habitability for good, I'm not sure we'd be able to do it."

But we sure can make it a lot more miserable to live on.

[baddox]

Sure, but by this point we've redefined "destroying the Earth" to mean "making someone less comfortable."

[illuminate]

"If that didn't destroy its habitability for good, I'm not sure we'd be able to do it"

You have a pretty stunted imagination for what we are able to do to the planet.

[OGinparadise]

For good or not, I would like to spend the rest of my natural life without these artificial challenges, as fun as they may be ;)

[sneak]

Nothing that happens is artificial. Humans are part of nature, just as enriched plutonium is.