Tropical cyclone Yasi hits Australia

Feb. 2, 2011, noon

In the height of Australian cyclone season – which runs from November to April – a cyclone ranking at the most dangerous level has reached Queensland, Australia.

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Stem cells to cure blindness

Nov. 21, 2010, noon

Twelve people in the US are to get pioneering stem cell treatment to try to cure their hereditary blindness, using the world's first eye therapy derived from human embryonic cells.

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