
New remote-controlled microrobots for medical operations
For the past few years, scientists around the world have been studying ways to use miniature robots to better treat a variety of diseases. The robots are designed to enter the human body, where they ... more
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Avoiding stumbles, from spacewalks to sidewalks
Video of astronauts tripping over moon rocks can make for entertaining Internet viewing, but falls in space can jeopardize astronauts' missions and even their lives. Getting to one's feet in a bulky ... more
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U.S. defense in free fall
Saudi Arabia and Pakistan sign mutual defense pact
Brazil, Chile sign defense agreement
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Could the deadly mosquito-borne yellow fever virus cause a Zika-like epidemic in the Americas?
Yellow fever virus (YFV), a close relative of Zika virus and transmitted by the same type of mosquito, is the cause of an often-fatal viral hemorrhagic fever and could spread via air travel from end ... more
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Colombia declares its Zika epidemic over
Colombia declared Monday its Zika epidemic is over, but warned that the mosquito-borne virus, which is blamed for causing brain damage in babies, would continue circulating on a smaller scale. ... more
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'Sugar daddies' and 'blessers': A threat to AIDS fight
Lebogang Motsumi, 27, still remembers the moment when she learnt she had contracted HIV from a man a decade her senior. ... more
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