How long will the human race be able to survive on this planet earth ?

The way we (people) are polluting and also harming the environment and also using up natural resources, how long (how many {hundred} years) do you feel humans will be able to survive properly? As you know 'Nature' is most powerful what are the chances that she might hit back in some way or the other at the... show more The way we (people) are polluting and also harming the environment and also using up natural resources, how long (how many {hundred} years) do you feel humans will be able to survive properly?
As you know 'Nature' is most powerful what are the chances that she might hit back in some way or the other at the human race (which mother nature has already done in the past)?
I am asking everybody and also experts?
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