News tagged with human population
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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Measuring enzyme levels in cancer patients may reveal healthy cells' ability to survive chemotherapy
New research from MIT may allow scientists to develop a test that can predict the severity of side effects of some common chemotherapy agents in individual patients, allowing doctors to tailor treatments ...
Genetics
Apr 05, 2013 |
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Team finds mechanism that regulates production of energy-burning brown fat
Joslin scientists have discovered a mechanism that regulates the production of brown fat, a type of fat which plays an important role in heat production and energy metabolism. The findings, which appear in the upcoming issue ...
Medical research
Mar 13, 2013 |
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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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Discovery advances fight against phleboviruses
(Medical Xpress)—Researchers in the Life Sciences Institute at the University of Michigan have discovered how a particular type of virus hides and protects its genetic information from the immune system, ...
Medical research
Nov 07, 2012 |
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Abundance of rare DNA changes following population explosion may hold clues to common diseases
One-letter switches in the DNA code occur much more frequently in human genomes than anticipated, but are often only found in one or a few individuals.
Pediatrics
May 17, 2012 |
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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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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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Population genetics reveals shared ancestries
More than just a tool for predicting health, modern genetics is upending long-held assumptions about who we are. A new study by Harvard researchers casts new light on the intermingling and migration of European, Middle Eastern ...
Genetics
May 24, 2011 |
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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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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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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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Genetic discovery found to influence obesity in people of African ancestry
The largest genetic search for "obesity genes" in people of African ancestry has led to the discovery of three new regions of the human genome that influence obesity in these populations and others.
Genetics
Apr 15, 2013 |
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Fralin entomologists map out the genetics behind a deadly disease
(Medical Xpress)—Stopping the spread of dengue infection— a potentially fatal tropical disease transmitted by the Aedes aegypti mosquito— could be one of the biggest challenges of our time. About half of the human ...
Diseases, Conditions, Syndromes
Mar 21, 2013 |
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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.
