I would like to know how many humans have ever lived on earth. A good logic analysis to come to a conclusion.?
461588
Estimates range around the 100 billion number.\n\nThe first reference contains an explanation of\nthe assumptions and how they might affect the\nfinal estimate.\n\nThe second reference comes to similar conclusions.
1067842
Using mathematics to determine the chances of life elsewhere in the universe, one estimate determines that there are approximately 10^75 advanced societies.  If true, then it is very likely that there is life beyond earth – even advanced life forms.
862621
All sorts, it is almost invetable that the universe MUST be teeming with life.\nBillions of planets, millions with life.  Possibly billions with life
572441
Every day 400000 babies are born, 150000 people die for a net increase of 250000 human beings a day. So it is approximately 3 to 1 as you guessed.\n\nCurrently the worldpopulation increases with 90 million a year, or about 1.4%. We are crowding 6500 million people on the planet.
894947
If you mean on the earth, the answer is 6 billion.
1098860
Using mathematics to determine the chances of life elsewhere in the universe, one estimate determines that there are approximately 10^75 advanced societies.  If true, then it is very likely that there is life beyond earth – even advanced life forms.\n\nSteve\n:-D
693261
Demographers have come up with estimates ranging between 69 billion and 110 billion humans.\n\n\nA complication, among scientists at least, is that we do not know precisely when our primate ancestors became human. Many researchers have arbitrarily settled on one million years ago, even though our own subset of the genus Homo, H. sapiens sapiens, did not emerge until around 40,000 years ago.\n\nIf the paleolithic crowd (1 million years to 25,000 years ago) strikes you as too crude for admission to the communion of saints, subtract 36 billion or so from the figures above.
188093
I think there is definitely other forms of life. Whether there human or not don't know. Since humans haven't been around nearly as long as the planets, stars, galaxies etc. I would bet that there are far more intelligent life forms out there.
87641
There are hundreds if not thousands of insects per each human so if you count them, fish, etc.  You have thousands to one.  If you want to count bacteria as animals then it is billions to one.
1071064
Absolutely not and I think it would be incredibly arrogant of us to think we are the only life in the entire universe, considering how many billions of planets, if not galaxies, there are.  There are more that can sustain life.
211202
Now, in your main question, you use the generic term "ones," but in the details you use "human beings."  It is possible we are the only human beings, since that refers to a specific pattern of physical and mental processes.  But the only Ones, as in living, conscious, self-aware beings?  That would be statistically amazing, given how many stars there are, and how many planets revolve around our star.  Science fiction has long estimated the number of habitable planets, the number which are in fact inhabited, etc.  I can't say how many, but I'd be truly amazed if we are the only ones.
605269
Don't know, but I have read that the total number people alive today is far greater than the total number of people who have ever lived and died.\n\nThe short answer is; everyone who has survived birth.
220781
Dear sweet one, \n\n  There is no proof.  If there were proof, then the global population would be in perfect agreement.  There is faith, and there are theories.  And nothing more.
1044962
It has recently been suggested that life on earth began much earlier than once thought. The earth is around 4.5 billion years old. But life is thought to have started just 500 million years into its existence - not long after it was first able to really support life.
1111667
Projections have the world population hitting six billion sometime around the middle of next year. Beyond that, it's hard to give you an exact answer. We can tell you that there are approximately 25 more people in the world than there were when you started reading this paragraph. That's because current research indicates that about five people are born every second, while two people pass away, leaving us with a population rate of three new humans per second.\n\nhere I found this site also... this is better and this can show your 8 year old alot more!  Have fun!\n\nhttp://www.census.gov/population/www/popclockus.html
1077917
The population of the earth is 6.25 billion. The population of the U.S. is in excess of 300,000,000. Mud people, quit breeding.
1006929
Seriously, this is funny. Anyhow, there is absolutely no way of knowing how many planets exist in the entire universe as the universe as we know it is far to huge for any of our technology to fully explore. \n\nAnyhow, please stick with the topic. This has absolutely NOTHING to do with computers.\n\nThanks!