The average

The average mammalian species has a 1-million-year lifespan, which suggests that at some point our time will come if we do nothing to prevent it. Catastrophes that could wipe us out are inevitable in deep time. But unlike other animals, we have advanced intelligence, so that taking the "astronomical" path beyond Earth promises a much longer future for our species. If we have settlements all over the galaxy, humanity becomes far more robust.

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สาระสำคัญ  parasite