News tagged with human population
New algorithm provides new insights into evolutionary exodus out of Africa
Researchers have probed deeper into human evolution by developing an elegant new technique to analyse whole genomes from different populations. One key finding from the Wellcome Trust Sanger Institute's study is that African ...
Jul 13, 2011 |
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Modern man found to be generally monogamous, moderately polygamous
(PhysOrg.com) -- Did women and men contribute equally to the lineage of contemporary populations? Did our ancestors, Homo sapiens, lean more toward polygamy or monogamy? To answer these questions, Dr. Damian ...
Mar 02, 2010 |
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California's Ancient Kelp Forest
(PhysOrg.com) -- The kelp forests off southern California are considered to be some of the most diverse and productive ecosystems on the planet, yet a new study indicates that today's kelp beds are less extensive and lush ...
Nov 10, 2009 |
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Why sex with a partner is better (w/ Video)
(PhysOrg.com) -- OK, it takes two for human reproduction, and now it seems that plants and animals that can rely on either a partner or go alone by self-fertilization give their offspring a better chance for ...
Oct 21, 2009 |
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Study finds human population expanded during late Stone Age
Genetic evidence is revealing that human populations began to expand in size in Africa during the Late Stone Age approximately 40,000 years ago. A research team led by Michael F. Hammer (Arizona Research Laboratory's Division ...
Jul 29, 2009 |
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Australia discovered by the 'Southern Route'
Genetic research indicates that Australian Aborigines initially arrived via south Asia. Researchers writing in the open access journal BMC Evolutionary Biology have found telltale mutations in modern-day Indian populations that a ...
Jul 21, 2009 |
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New analysis shows 'hobbits' couldn't hustle
A detailed analysis of the feet of Homo floresiensis—the miniature hominins who lived on a remote island in eastern Indonesia until 18,000 years ago -- may help settle a question hotly debated among paleontologists: how si ...
Other Sciences / Archaeology & Fossils
May 06, 2009 |
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Despite their diversity, pygmies of Western Central Africa share recent common ancestors
Despite the great cultural, physical, and genetic diversity found amongst the numerous West Central African human populations that are collectively designated as "Pygmies," a report published online on February 5th in Current Bi ...
Biology /
Feb 05, 2009 |
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Study shows competition, not climate change, led to Neanderthal extinction
In a recently conducted study, a multidisciplinary French-American research team with expertise in archaeology, past climates, and ecology reported that Neanderthal extinction was principally a result of competition with ...
Other Sciences / Archaeology & Fossils
Dec 29, 2008 |
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Sharing landscapes with wildlife may be unrealistic
(Phys.org) -- Expecting wild animals to thrive in increasingly fragmented habitats alongside a growing human population may be unrealistic, say scientists.
May 03, 2012 |
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Shedding light on debate over organic vs. conventional agriculture: Study calls for combining best of both approaches
(Phys.org) -- Can organic agriculture feed the world?
Apr 25, 2012 |
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Meat eating led to earlier weaning, helped humans spread across globe
When early humans became carnivores, their higher-quality diet allowed mothers to wean babies earlier and have more children, with potentially profound effects on population dynamics and the course of human evolution, according ...
Apr 18, 2012 |
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European neanderthals were on the verge of extinction even before the arrival of modern humans: study
New findings from an international team of researchers show that most neanderthals in Europe died off around 50,000 years ago.
Other Sciences / Archaeology & Fossils
Feb 26, 2012 |
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Scalable amounts of liver and pancreas precursor cells created using new stem cell production method
Scientists in Canada have overcome a key research hurdle to developing regenerative treatments for diabetes and liver disease with a technique to produce medically useful amounts of endoderm cells from human pluripotent stem ...
Dec 02, 2011 |
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Evolution during human colonizations
Most human populations are the product of a series of range expansions having occurred since modern humans left Africa some 50,000 years ago to colonize the rest of the world, but how have these processes influenced today's ...
Nov 03, 2011 |
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World population
The term world population commonly refers to the total number of living humans on Earth at a given time. As of 29 July 2009, the Earth's population is estimated by the United States Census Bureau to be 6.774 billion. The world population has been growing continuously since the end of the Black Death around 1400. There were also short term falls at other times due to plague, for example in the mid 17th century (see graph). The fastest rates of world population growth (above 1.8%) were seen briefly during the 1950s then for a longer period during the 1960s and 1970s (see graph). According to population projections, world population will continue to grow until around 2050. The 2008 rate of growth has almost halved since its peak of 2.2% per year, which was reached in 1963. World births have levelled off at about 134-million-per-year, since their peak at 163-million in the late 1990s, and are expected to remain constant. However, deaths are only around 57 million per year, and are expected to increase to 90 million by the year 2050. Since births outnumber deaths, the world's population is expected to reach about 9 billion by the year 2040.
For more information about World population, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
