
Astronaut vision may be impaired by spinal fluid changes: study
Astronauts may experience blurry vision and impaired eyesight after long spaceflights due to changes in spinal fluid that occur while in microgravity, researchers said Monday. ... more
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Study finds cause of visual impairment in astronauts
A visual problem affecting astronauts who serve on lengthy missions in space is related to volume changes in the clear fluid that is found around the brain and spinal cord, according to new research ... more
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Restoring sea floor after mining may not be possible, researchers warn
China starts construction of Tibet mega-dam
Brazil's Congress passes bill easing environmental licensing rules
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Almost half of HIV infections worldwide undetected: WHO
The World Health Organization warned on Tuesday that nearly half of all people with HIV around the globe do not know they are infected, and called for broader access to at-home testing kits. ... more
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One in seven with HIV in Europe unaware of infection: study
One in seven people with HIV in Europe is unaware of their infection, the EU and World Health Organization reported Tuesday as 2015 marked another record year for new HIV cases in the region. ... more
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S.Africa launches major new trial of AIDS vaccine
South Africa on Wednesday begins a major clinical trial of an experimental vaccine against the AIDS virus, which scientists hope could be the "final nail in the coffin" for the disease. ... more
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Death toll rises in Australia 'thunderstorm asthma'
The death toll from Australia's "thunderstorm asthma" episode has risen to six and three others are in critical condition, authorities said Sunday, as they assessed the fallout from the unprecedented event. ... more
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El Nino conditions in the Pacific precedes dengue fever epidemics
Researchers have found a strong association between El Nino-Southern Oscillation conditions in the Pacific to observed weather and dengue epidemics in Sri Lanka. According to a study published in th ... more
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