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Posted by admin in Biology, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Our changing oceans The world’s oceans are undergoing significant changes – seen in indicators such as temperature and salinity. Isabelle Ansorge and Mike Roberts explain how South Africa is involved in investigations of these changes. The meridional overturning circulation (MOC) is a system of surface and deep
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Posted by admin in Biology, Featured, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Robots in the ocean Why do we need a global ocean observing system? by Thomas Mtsonti and Isabelle Ansorge In the past three decades, discussions of global warming have been restricted mainly to academic debates. Now, however, the same topics provide fuel for public debate and mounting pressure for increasing
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Posted by admin in Biology, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
High in the food chain – seals in the Southern Ocean The Marion Island seal populations have been studied for the last 30 years. Cheryl Tosh and Marthán Bester describe their field research. Deep in the Southern Ocean, Marion Island is a platform for breeding seals and seabirds
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Posted by admin in Biology, Environment, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
Invasive aliens in Antarctica Even the remote Antarctic continent and its sub-Antarctic islands and seas are troubled by invasive alien species. By Anne M Treasure The introduction of invasive alien species has been recognised as a major threat to biodiversity and ecosystems and the resulting effects have been
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13
May
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tagged: black carbon, Quest, Quest Interactive, Quest Science magazine, Science magazine, soilsNo Comments
Where does charcoal, or black carbon, in soils go?
Posted by Bridget in Biology, Life, Science in Society, Technology
Scientists find surprising new answers in wetlands such as the Everglades, in the US state of Florida. Charred boreal forest after a fire has raged: where does the ‘charcoal’ go? Scientists have uncovered one of nature’s long-kept secrets – the true fate of charcoal in the
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13
May
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tagged: breast cancer, cognitive problems, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
Study finds scientific basis for cognitive complaints of breast cancer patients
Shaun Mason For many years, breast cancer patients have reported experiencing difficulties with memory, concentration and other cognitive functions following cancer treatment. Whether this mental ‘fogginess’ is psychosomatic or reflects underlying changes in brain function has been a bone of contention among scientists and physicians. Now,
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13
May
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tagged: cellulose, food technology, Quest, Quest Interactive, Quest Science magazine, Science magazine, starchNo Comments
Inedible plant material may be convertible to food
Posted by Bridget in Biology, Life, Science in Society, Technology
Courtesy of Virginia Tech and World Science staff Researchers say they have managed to turn an inedible plant material called cellulose into starch – potentially opening up a huge new nutrient source for humanity. Starch can be edible by people if its quality is high enough.
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13
May
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tagged: exoplanets, Kepler mission, NASA, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
NASA’S Kepler discovers its smallest ‘habitable zone’ planets to date
NASA’s Kepler mission has discovered two new planetary systems that include three super-Earth-size planets in the ‘habitable zone,’ the range of distance from a star where the surface temperature of an orbiting planet might be suitable for liquid water. The Kepler-62 system has five planets; 62b, 62c,
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13
May
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tagged: Coelacanth, DNA, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
DNA of ‘living fossil’ decoded
Posted by Bridget in Biology, Life, Palaeontology
Courtesy of the Broad Institute of MIT and World Science staff Researchers have decoded the genome of a fish often seen as the most famous ‘living fossil’: the African coelacanth. A 1.5m sea-cave dweller with limb-like fins, the fish was once thought to be extinct, until
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6
May
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tagged: Electronics, Quest, Quest Interactive, Quest Science magazine, resistors, Science magazine, transistorNo Comments
Cape Town company makes world breakthrough in transistor design
Posted by Bridget in Physics & Maths, Science in Society, Technology
At the IDTechEx 2013 Printed Electronics Europe Conference and Exhibition in mid April, Cape Town-based PST Sensors announced the commercial release of the first new type of transistor in 65 years. The new device, which has been termed by its inventors as a “current switching transistor”
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