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Stories for February 25th 2010

• Thursday, February 25th 2010 - 01:11 UTC

  Genetically altered mosquitoes to help curb spread of dengue fever

  

  Scientists are breeding a genetically altered strain of mosquito in an effort to curb the spread of dengue fever. The dengue virus is spread by the bite of infected female mosquitoes and there is no vaccine or treatment.

• Thursday, February 25th 2010 - 01:06 UTC

  Sperm whales herd hunt “squid balls” at depths over 1.000 meters

  

  Sperm whales may team up and hunt collaboratively, scientists have suggested. A US research team used hi-tech tags to glimpse some of the giant marine mammals' remarkable hunting behaviour.

• Thursday, February 25th 2010 - 00:54 UTC

  Round up of Cuban dissidents following the death of political prisoner

  

  Cuban security agents detained dissidents across the country to prevent protests at the funeral of a leading dissident who died on a prison hunger strike and which has sparked international indignation. Cuban president Raul Castro said he regrets the death of Orlando Zapata and denies the rights activist had been tortured.