Scientists have succeeded in converting annual plants into perennials. They discovered that the deactivation of two genes in annuals led to the formation of structures that converted the plant into a perennial. This was most likely an important mechanism in plant evolution, initiating the formation of trees.
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Pittsburgh Compound B, an imaging agent that could facilitate the early diagnosis of Alzheimer’s disease, has been used to identify amyloid deposition in the brains of clinically older adults. The findings could not only shed more light on how the illness progresses, but also open the door to the possibility of prevention strategies.
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An exciting discovery in Jerusalem constituting extraordinary remains of the wall of the city from the time of the Second Temple (second century BCE-70 CE) that was built by the Hasmonean kings and was destroyed during the Great Revolt, and also the remains of a city wall from the Byzantine period (324-640 CE) which was [...]
People who are HIV-positive are now living longer, healthier lives, thanks to antiretroviral therapy and other treatment advances, and the number of HIV-positive people seeking LASIK, intraocular lenses following cataract removal, and similar procedures is likely to grow in coming years.
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“Net energy is a (mostly) irrelevant, misleading and dangerous metric,” says the editor-in-chief of Biofuels, Bioresources and Biorefining.
A fix for the economy must address ecological threats, a top international scientific meeting here has urged. Human society is moving dangerously beyond the planet’s natural limits in a striking parallel to the financial debt crisis. “We’re running the planet like a subprime loan,” Dr. Johan Rockstrom of the Stockholm Resilience Center said. A coordinated [...]
An APEX telescope image reveals how an expanding bubble of ionized gas about ten light-years across is causing the surrounding material to collapse into dense clumps that are the birthplaces of new stars. Sub-millimeter light is the key to revealing some of the coldest material in the universe, such as these cold, dense clouds.
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Phase I results of the first clinical trial of gene therapy for patients with advanced heart failure show the approach to be promising, with improvements in several measures of the condition’s severity.
A 2,000 year old gold earring inlaid with pearls and precious stones was discovered in excavations that the Israel Antiquities Authority is conducting in the Giv’ati car park at the City of David, in the “Walls around Jerusalem National Park”. The earring, which is made of a coiled gold hoop, has a large inlaid pearl [...]
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Radiology and cardiovascular researchers have presented new data that shows the risk of cancer from exposure to radiation during computed tomography for cardiovascular disease has been overstated and that new estimates are several times lower than previously published conclusions.
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