Quote:
Originally Posted by tshiggins
This, all by itself, would likely be enough. Create a fungal blight that affects grasses, that thrives in an environment with elevated levels of CO2, and watch civilization die.
This was the scenario at the beginning of Interstellar.
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Shroom-1, the fungus planet. I can see it now.
On a more serious note, funguses actually breathe in oxygen, it's just that they can survive without it if they're capable of anaerobic respiration.
That's all I know, though.