News tagged with human population
Stem-cell-based strategy boosts immune system in mice
Raising hopes for cell-based therapies, UC San Francisco researchers have created the first functioning human thymus tissue from embryonic stem cells in the laboratory. The researchers showed that, in mice, ...
Immunology
May 16, 2013 |
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Herpes infections: Natural Killer cells activate hematopoiesis
Infections can trigger hematopoiesis at sites outside the bone marrow – in the liver, the spleen or the skin. LMU researchers now show that a specific type of immune cell facilitates such "extra medullary" ...
Medical research
May 16, 2013 |
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Research identifies gene mutations associated with nearsightedness
People have long taken for granted that glasses and contact lenses improve vision for nearsightedness, but the genetic factors behind the common condition have remained blurry. Now researchers at Duke Medicine ...
Genetics
May 02, 2013 |
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Scientists pinpoint brain's area for numeral recognition
Scientists at the Stanford University School of Medicine have determined the precise anatomical coordinates of a brain "hot spot," measuring only about one-fifth of an inch across, that is preferentially activated ...
Neuroscience
Apr 16, 2013 |
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World's most advanced genetic map created
A consortium led by scientists at the University of Oxford and Harvard Medical School has constructed the world's most detailed genetic map.
Genetics
Jul 20, 2011 |
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As population exploded, more rare genes entered human genome
(Medical Xpress) -- As the Earth's human population has skyrocketed since the rise of agriculture some 10,000 years ago -- to 7 billion people from a few million -- so, too, has the number of rare genetic variants.
Genetics
May 11, 2012 |
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Modern genetics answers age-old question on Garrod's fourth inborn error of metabolism
Fifty years after participating in studies of pentosuria, an inherited disorder once mistaken for diabetes, 15 families again welcomed medical geneticists into their lives. Their willingness to have their DNA analyzed with ...
Genetics
Oct 31, 2011 |
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Harmful protein-coding mutations in people arose largely in the past 5,000 to 10,000 years (Update)
(Medical Xpress)—A study dating the age of more than 1 million single-letter variations in the human DNA code reveals that most of these mutations are of recent origin, evolutionarily speaking. These kinds ...
Genetics
Nov 28, 2012 |
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Evolving genes lead to evolving genes
Researchers have designed a method that can universally test for evolutionary adaption, or positive (Darwinian) selection, in any chosen set of genes, using re-sequencing data such as that generated by the 1000 Genomes Project. ...
Genetics
Apr 18, 2013 |
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Cells forged from human skin show promise in treating multiple sclerosis, myelin disorders
A study out today in the journal Cell Stem Cell shows that human brain cells created by reprogramming skin cells are highly effective in treating myelin disorders, a family of diseases that includes multiple sclerosis and ra ...
Medical research
Feb 07, 2013 |
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Researchers discover gene that suppresses herpesviruses
Kaposi's sarcoma-associated herpesvirus (KSHV) and Epstein-Barr virus (EBV) hide within the worldwide human population. While dormant in the vast majority of those infected, these active herpesviruses can ...
Medical research
Feb 13, 2013 |
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China researchers link obesity to bacteria
Chinese researchers have identified a bacteria which may cause obesity, according to a new paper suggesting diets that alter the presence of microbes in humans could combat the condition.
Overweight and Obesity
Dec 19, 2012 |
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Sleeping sickness by stealth
(Medical Xpress)—Stealth is a well-known concept in military tactics. Almost since the invention of radar, the hunt began for counter-technologies to hide aircraft and missiles from detection – most successfully ...
Immunology
Feb 05, 2013 |
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First animal model of recent human evolution
The first animal model of recent human evolution reveals that a single mutation produced several traits common in East Asian peoples, from thicker hair to denser sweat glands, an international team of researchers reports.
Genetics
Feb 14, 2013 |
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Study: Gene-gene interactions important to trait variance
(Medical Xpress)—Gaining more insight into predicting how genes affect physical or behavioral traits by charting the genotype-phenotype map holds promise to speed discoveries in personalized medicine. But ...
Genetics
Sep 11, 2012 |
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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.
