Archeologists estimate that "modern humans" have been on the Earth for about 200,000 years. I know that's not "billions of years" but given that people are living longer and with more modern conveniences along with various scientific breakthroughs there is no reason to believe 7 billion people are going to suddenly disappear in the near future. I had an instructor state: "Intelligence is the ability of an organism to adapt to it's environment." Human beings have proven to be quite adaptable over the centuries and millennia.
Yes mate & all they have to do is give us all our land & resources back, that was "stolen" from us many years before we we're born..There's no shortage of land or resources on planet earth, & in "fact" there's enough room etc for 100 billion people with 2 acres of arable farm land for each person..They cram everyone into towns & cities (workshops for the slave masses) giving the illusion of over population, but it's total horse s**t & it's done just to gain control over us all..So it's perfectly possible right now, but there's too many greedy power mad insane people running the world..It's not their world it's our world, & the people need to wake up & realise that instead of being lazy sheep.