Health and medicine

• BRIEFING: Should everyone have an HIV test?

  US doctors propose expanding the use of HIV tests to slow the spread of infection.

  1 December 2008

• Q&A: UNAIDS chief prepares to pass the torch

  On World AIDS Day, Peter Piot assesses the evolution of the epidemic.

  1 December 2008

• Boost for work on deadliest forms of cancer

  UK charity's �1.5 billion strategy includes plans for 20 new research centres.

  27 November 2008

• Genetics of cancer relapse revealed - Premium content

  Biologists have tracked the origins and evolution of a type of childhood leukaemia that is deadliest when it recurs.

  27 November 2008

• Q&A: UNAIDS chief prepares to pass the torch - Premium content

  On World AIDS Day, Peter Piot assesses the evolution of the epidemic.

  27 November 2008

• Mice share yeast's ageing system - Premium content

  Sirtuin proteins linked to lifespan in mammals.

  26 November 2008

• IN BRIEF: Unique collaborations at Howard Hughes institute - Premium content

  26 November 2008

• Argentina: The come back - Premium content

  Argentina's government has pledged to reverse a decades-long scientific brain drain. Rex Dalton reports.

  26 November 2008

• South Africa suspends water scientist - Premium content

  Anthony Turton may be dismissed after speaking to journalists about a controversial presentation.

  25 November 2008

• Brain implant allows mute man to speak - Premium content

  Patient with paralysis controls speech synthesizer with his mind.

  21 November 2008