[pharrington]

That is a true statement. Another true statement is that Earth's greenhouse gases are basically a trace compared with Venus's. Another true statement is that the current human causal rate of CO2 emissions will rapidly change our environment to one unsuitable for human life.

[eloff]

Source on that last one? Even the worst climate change predictions don't create an earth unsuitable to human life. Hostile changes, sure. Unsuitable? No.

[pharrington]

You're right, I shouldn't have said that. Unsuitable for human civilization is what I should have said.

[eloff]

That would only be in the worst case scenarios, and even then only a transitory condition. You can't keep humans down forever, sooner or later we'd rise again. It's debatable what it would take for civilization to collapse, and how long it would take to recover. But I think there's little doubt that recover it would.

[nixpulvis]

The sad truth is nobody actually knows what's going to happen. We can only read the signs.