Hot News

Mars crater shows evidence for climate evolution

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Danielson and Kalocsa craters

HIV superinfection in Uganda may be more common than previously thought, study finds

HIV superinfection, when a person with HIV could acquire a second, new strain of HIV, may occur as often as initial HIV infection in the general population in Uganda, a study suggests.

Britain's Clinton Cards sold by administrator to American Greetings

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LONDON Majority of Britain's Clinton Cards and Birthdays stores have been sold by the ad...

NIH study finds childhood CT scans linked to leukemia and brain cancer later in life

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Nurse practitioner reviews films from a CT scan of the brain.