VIVA – From nuclear war to giant asteroid strikes. It’s not hard to imagine how life would be human on Earth suddenly ended in an instant. But, assuming there were survivors, how much would it actually take to sustain our species?
The answer is it depends on a factor. Different disasters will create the conditions of the day doomsday different to survive in the human population. For example, nuclear war can trigger a nuclear winter. Survivors will face freezing summer temperatures and global famine, not to mention radiation exposure.
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However, putting some of these conditions aside and focusing on population size, the minimum number of survivors is likely to be very small compared to the 7.8 billion people alive today, according to the site. Live Science, Thursday, 6 May 2021.
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