How old is the World?
440289
About 4600 million years.
664516
NASA's Wilkinson Microwave Anisotropy Probe (WMAP) project estimates the age of the universe to be:\n\n(13.7 ± 0.2) × 109 years. \nThat is, the universe is about 13.7 billion years old, with an uncertainty of 200 million years. However, this age is based on the assumption that the project's underlying model is correct; other methods of estimating the age of the universe could give different ages.
3826
Around 600,000 years old. Maybe even older.
34630
There are rocks older than 3.5 billion years on all continents, but the oldest found so far is Acasta Gneisses in northwestern Canada near Great Slave Lake (4.03 billion years old). \n\nOne of the oldest forms of life on earth is the stomatolites (3.5 billion years old or so), which are still found living in western Australia and a few other places.
675326
Earth is about 3.6 billion years ,i dont know the rest.
1028317
The Solar System is believed to be around 4.5 billion years old. Hence, ignoring any changes in the length of the year, the Earth has orbited the sun 4.5 billion times.
671187
The generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years (plus or minus about 1%). This value is derived from several different lines of evidence.\n\nUnfortunately, the age cannot be computed directly from material that is solely from the Earth. There is evidence that energy from the Earth's accumulation caused the surface to be molten. Further, the processes of erosion and crustal recycling have apparently destroyed all of the earliest surface.\n\nThe oldest rocks which have been found so far (on the Earth) date to about 3.8 to 3.9 billion years ago (by several radiometric dating methods). Some of these rocks are sedimentary, and include minerals which are themselves as old as 4.1 to 4.2 billion years. Rocks of this age are relatively rare, however rocks that are at least 3.5 billion years in age have been found on North America, Greenland, Australia, Africa, and Asia.\n\nWhile these values do not compute an age for the Earth, they do establish a lower limit (the Earth must be at least as old as any formation on it). This lower limit is at least concordant with the independently derived figure of 4.55 billion years for the Earth's actual age.
61902
Earth is thought to be between 4.5 and 4.8 billion years old. The age of Earth is found by measuring the age of very old Earth rocks. This is done by measuring the rate at which elements of the radioactive metal uranium decay (break down) into lead. Scientists have also measured the age of meteorites which have fallen onto Earth's surface, and the age of moon rocks brought back by the Apollo astronauts. Both the meteorites and the moon formed around the same time as Earth, and they show similar ages.\n\nIf you want a break down of that timespan in terms of Geologic Periods, see:\nhttp://www.cotf.edu/ete/modules/msese/earthsysflr/geotime.html
66159
The generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years. I am not an expert on this matter, but I believe in science. If someday people find new convincing theories, I will be very open to accept them. But only 6000 years old? Come on, I don't buy it.
1092532
according to mr. wikipedia... the age of earth is... geologists have determined the age of the Earth to be around 4.55 billion years (4.55x109 years). This age represents a compromise between the oldest-known terrestrial minerals – small crystals of zircon from the Jack Hills of Western Australia – and astronomers' and planetologists' determinations of the age of the solar system based in part on radiometric age dating of meteorite material and lunar samples.\n\nThe radiometric age dating evidence from the zircons further confirms that the Earth is at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to the multitudes of other stars, it appears that the solar system cannot be much older than those rocks. Ca-Al-rich inclusions – the oldest known solid constituents within meteorites which are formed within the solar system – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of the Earth. It is assumed that the accretion of the Earth began soon after the formation of the Ca-Al-rich inclusions and the meteorites. Since the accretion time of the Earth is not exactly known yet, and the predictions from different accretion models vary between several millions up to about 100 million years, the exact age of the Earth is difficult to define.\n\nIn the centuries preceding the scientific revolution, the age of the Earth was determined from the accounts of creation by religious authority. Today some religious groups continue to accept only theological accounts regarding the age of the earth, rejecting scientific evidence which contradicts their beliefs.\n\n\nHope this helps... ^^
54811
According to the US Geological Survey (USGS), the Earth is approximately 4.5 billion years old.\n\nThe articles below discuss the evidence for this estimate.
750286
Scientists say that the Earth is about 4.5 billion years old. The oldest rocks that have been found are 3.8-3.9 billion years old. They actually think the Earth is 4.55 billion years old to be specific. Just to let you know i got it off  a website.
1062001
How old are you and how old is she?
565410
This world STARTED when the last one ENDED.\nMeditate on it.
527612
Between 12 and 14 billion years.\n\nLearn more here:\n\nhttp://map.gsfc.nasa.gov/m_uni/uni_101age.html
149766
How about a more informative answer?\n\nFrom Wikipedia:\n\n\n\n\nHomo sapiens live on average 37 years in Zambia and on average 81 years in Japan. The oldest confirmed recorded age for any human is 122 years, though some people are reported to have lived longer. The following information is derived from the Encyclopedia Britannica, 1961:\n\nHumans by Era, Average Lifespan (in years)\n\n    * Neanderthal, 20\n    * Neolithic, 20\n    * Classical Greece, 28\n    * Classical Rome, 28\n    * Medieval England, 33\n    * End of 19th Century, 37\n    * Early 20th Century, 50\n    * Circa 1940, 65\n    * Current (in the Western world), 77-81\n\n\nCheck out the wiki article if you want more info.\n\nHope this helps! =)
993258
The Earth was formed around 4.57 billion (4.57×109)[1] years ago