How long can earth sustain humanity?
How long will it be before the earth will not be able to sustain the human population?
What is the minimum viable population for humans to repopulate the Earth? How would earth be different if humans had an average lifespan of 200 years? What can we expect to happen to humans in 1,000  years? If nearly everyone on earth died for some reason. How many people would be needed to repopulate earth without any inbreeding effects? How many humans would it take to repopulate the earth? What is the minimum number of people necessary to repopulate the earth without interbreeding issues? How far would the earth have to move from the sun to make a day last 25 hours? Would we (humans) survive if it was that far away? Every terran living being comes from a common ancestor and life originated only once in 4.6 bi years. So it is unlikely to occur outside Earth, right? How long is the human race likely to survive? Can the planet "do dinosaurs again"? How many human beings have lived on this Earth since the beginning of the time? How and when will humans likely become extinct? When will the human race stop destroying earth? Will the humanity become extinct? When do you think humanity will become extinct? Our society started near 5000 BC if you believe in the Vedic period. Earth is not like it was before. How many lives can we expect on earth provided that there are no wars and no migration? How is earth 6000 years old when ancient people in the Bible lived for hundreds of years? When will we become extinct? Why does 120 years seem to be the limit for the human lifespan? How will human beings on Earth come to an end? What is the age of the Earth? Assuming we don't kill ourselves, and go extinct as a species, is it logical to think that humans in the near future can use science to learn how to live for 300-400 years? How would the world be different if the average human life span were 200 years? What will be the scenario if humans disappear from earth? What would happen if the earth stopped rotating in a span 5 years? Would be be able to adapt or would we die? Will humans eventually become extinct? How would the world we live in look like 10000 years from now? Are Earth's carbon levels really past the point of no return? What does this mean for the long term survival of humanity? Is there any reason to hope? Because of climate change, the earth is going to be uninhabitable by the year 2035 according to new research. Isn't there any solution? If humanity disappeared right now, how much time would it take for every evidence of our existence to disappear from the face of the Earth? Could a civilization more advanced than ours have existed on this planet millions of years ago? What evidence could we use to rule out the possibility?