how many people live on earth?
410178
i think that no one have can say that how many people live on earth because the peoples are infinite. and only god knows that how many people live on earth.
1091079
6,525,170,264 was the world population in July 2006 .\n\nMaybe they know of some space aliens watching .
27597
Current population of the World 6,490,909,958.\n\nThis is as of 5 27AM eastern time.  \n\nBut there is only a correct answer for a certain amount of time as someone is born every second.  Also you have to factor in whether or not there is an extraterrestrial existence.
1042190
2,649,377,941 people. just a guess.
1030787
I'm afraid you asked a loaded question.  I don't believe humanity *can* survive exponential growth of its population for very much longer.  I don't know if our species has years or decades remaining... but it seems unlikely we have centuries unless we make drastic changes.\n\nAs I look, right now, the world population, according to my source below, is 6,627,722,573.  \n\nI agree with what little I know about Albert Bartlett's views on population growth.  For years I (and many others) have said that unchecked growth is a grave danger.  We simply do not have the material resources of fuel (for transportation and electricity) and food -- and ultimately space -- for population to continue to grow indefinitely!\n\n'People, people, and more people' is the engine at the root of a great deal of what is wrong with the world, and is arguably responsible for a dwindling enjoyment of life on this planet -- Earth  is of limited size, after all.  \n\nTake *unchecked* population growth to its seemingly-absurd but perhaps inevitable conclusion -- we are so physically restricted that we can no longer even move.  Or maybe we run out of food long before then.  Or growing stress and intolerance has sparked a global war.  Or a new or mutated virus has destroyed hundreds of millions of people in a matter of months, thanks to our close quarters and constant global movement.\n\nIronically, it might be a virus that saves us -- or, at least those of us who survive.  Freed of the need to compete for food and whatever fuel generates our electricity, they would at least have *some* of the resources our ancestors did.  Of course, even those things may be scarce if that global conflict I mentioned sparked a nuclear war.\n\nBut besides all the doomsday scenarios that could happen, our quality of life must suffer -- must already be suffering -- from our incessant reproduction.  Unless we live in the ever-dwindling rural areas of the planet, we are increasingly bombarded by noise, rudeness, superficiality, the tick of the clock, and the intolerance of our ever-closer neighbors and highway "companions" (erroneously implying they are pleasant to be around).  The person in the next car or house probably feels the crunch of space and time just as we do, and stress is a growing problem.\n\nWhere there are more people there is more anxiety and fear, more intolerance of rudeness -- and more rudeness! -- more consumption, more noise, more constant construction and change, leading to increasing interruptions to our movement, and an increasing sense of instability... more stress (which is a catalyst for further reductions in many of the aforementioned areas)... and... less peace of mind, less fresh air, less reasonably-priced and readily available food (at some point), less awareness of nature (the sound of a stream having long been drowned out by the honk of the horn and the rumble of the engine; the chirp of a bird having been obscured by the chirp of the Nextel, and the violence-inspiring thump of the boom car)... I could go on and on.\n\nI believe we are causing our world to evolve (or at least change; evolution implies improvement) faster than we, ourselves, are evolving.  That strikes a dangerous chord in my mind.\n\nThis is to say nothing of the other species--plant and animal--we share the earth with.  There is a need for them, too, not to mention a birthright of survival for every animal on earth!  \n\nI'm not as sure as I once was that we are heading toward these terrible conclusions... population growth isn't the rule in every country of the world.  Indeed, there is a dwindling population in some places, and I wish I could say where, but I don't know.\n\nBut spend some time in a national park -- some real, quality time during which you *begin* to get a sense of what peace of mind is about, and how beautiful the *entire* planet once must have been -- and then tell me we don't have to pay close attention to the
604824
The astrobiology folks at NASA have calculated that there are between one and thirty billion habitable planets in our Milky Way Galaxy.  If our solar system is typical,  you can multiply that by about 10 to get total planets: between 10 and 300 billion.  \n\nSo where is everybody?
1028493
China's overall population exceeds 1.3 billion. With the global human population currently estimated at about 6.5 billion, China is home to approximately 20%, or one-fifth of the world's population.
69960
In the universe? I don't know, but on Earth:\nThere are 6800 known languages spoken in the 191 countries of the world.
661631
a lot, over a  billion people
499665
i guess 1 billion people
856288
.World population\n\nMap of countries by population —showing the population of the People's Republic of China and India, the only two countries to have a population greater than a billion. (See List of countries by population.)\nThe world population is the total number of humans alive on the planet Earth at a given time. As of late 2006, the world population reached 6.5 billion.[1] In line with population projections, this figure continues to grow at rates that were unprecedented prior to the 20th century.
298790
Millions over 5 I believe.
885205
Around 7 billion and growing rapidly, unevenly in the different regions of Earth. It is expected that by the half of this century that number will double.... just imagine what we`ll do with the forest and wild life and the balance on the planet, carbon emissions....
421114
Globally, 12,672. Believe it or not.
131440
According to OECD data, population of Developed (OECD) countries as at 2004 was 1,160,738,000 people. World population, according to the US Census bureau was 6,376,863,118 people. This means the population of "third-world" countries is 5,216,125,118 people.
15340
Earth has a surface area of 196,940,400 square miles, slightly less than a perfect ball with a diameter of 7913.5 miles The surface area of the seven continents and all the islands of the world is about 57 million miles, while the total area of the six habitable continents (Antarctica excluded) is around 52 million square miles. \n\nThe human population on earth has crossed six billion. If we distribute all the exposed land evenly among all mankind, 133 people would have to share one square mile. What that means is that every single person on Earth, man woman and child would have close to five acres of land for his or her use. More precisely, each person would get 209,000 square feet of land, or a square plot of land 457 feet on each side. \n\nNot all this land can be used beneficially however. A significant portion of the Earth's exposed land is unhabitable or cannot be used for any agricultural purpose. Large portions lie in the far north. Large portions are extremely arid. Large portions are very mountainous. In sum, only about one fourth of all the land on earth, or somewhat more than 12 million square miles, is arable. \n\nToday, over half of the arable land in the world is in fact not under cultivation. Bringing the unused land into service in many cases would require huge investments of money and effort, and would do considerable damage to the environment. For example, only about 28% of the arable land on the African continent is used for growing crops. Immense tracts of forests or jungles would have to be cleared to bring the rest of the arable land on that continent to productive use. \n\nThus, only about one eighth of each imaginary plot of land distributed to each person is land which is under cultivation. In effect, each person has a piece of land about 26,000 square feet (a square 161 feet on each side or just a bit more than ½ an acre) at his or her disposal on which to grow all that he or she needs.
321604
I haven't been able to find any exact numbers, but since you asked for fraction, it's about 1/3 or about 2 billion people.