The novel SARS-CoV-2 coronavirus that emerged in the city of Wuhan, China, last year and has since caused a large scale COVID-19 epidemic and spread to more than 70 other countries is the product of natural evolution, according ...
Mar 17, 2020
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Microbiomes aren't just for understanding and modulating gut health—skin, our largest organ, hosts a vibrant and complex microbiome that can provide health insights. An international research team has developed an index ...
Aug 22, 2019
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With millions of COVID-19 cases reported across the globe, people are turning to antibody tests to find out whether they have been exposed to the coronavirus that causes the disease. But what are antibodies? Why are they ...
May 13, 2020
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University of Sydney research provides new evidence that nanoparticles, which are present in many food items, may have a substantial and harmful influence on human health.
May 13, 2019
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Cancer starts when cells start dividing uncontrollably. Scientists have known that taking aspirin can help protect against the development of colorectal cancer—cancer afflicting the colon or rectum—but the exact reason ...
Jun 10, 2022
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After childhood, about two-thirds of the world's human population loses the ability to digest milk. As far as we know, 100 percent of nonhuman mammals also lose this ability after weaning. The ongoing ability to digest lactose, ...
Apr 11, 2019
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Experts from the WHO on Tuesday all but eliminated a controversial theory that COVID-19 came from a laboratory in the Chinese city of Wuhan.
Feb 9, 2021
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(Medical Xpress)—The CDC has issued a report detailing its findings in attempting to trace the increasing difficulty in treating gonorrhea, a sexually transmitted disease (STD) that can cause severe discomfort, serious ...
A consortium led by scientists at the University of Oxford and Harvard Medical School has constructed the world's most detailed genetic map.
Jul 20, 2011
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The results of a study led by Northern Arizona University and the Translational Genomics Research Institute (TGen), an affiliate of City of Hope, suggest the immune systems of people infected with COVID-19 may rely on antibodies ...
Jan 19, 2021
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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.
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