May 2002

• Age gap drives AIDS epidemic - Premium content

  Education on risks of intergenerational relationships could help cap African HIV.

  31 May 2002

• Green fields are efficient - Premium content

  Organic farming means quality, not quantity.

  31 May 2002

• Day one for light pollution law - Premium content

  Czech Republic becomes first nation to outlaw excess outdoor light.

  31 May 2002

• Ozone hole on the mend? - Premium content

  The Antarctic ozone hole may be sewn up by 2040.

  31 May 2002

• Chance breaks world records - Premium content

  Many track and field events have reached plateaux.

  30 May 2002

• Chemical weapons trigger civil war - Premium content

  A wasp infiltrates ant nests by turning residents against each other.

  30 May 2002

• Sweat and tears drive bugs apart - Premium content

  Natural antibacterial stops bugs finding strength in numbers.

  30 May 2002

• Seismologists turn snoops - Premium content

  Tremors unearth terrorists, accidents and smuggling.

  30 May 2002

• Hope for neutrino detection - Premium content

  Elusive energy-packed particles should give new view cosmos after all.

  29 May 2002

• Giants accused of smokescreen - Premium content

  Study alleges tobacco industry is keeping pubs and restaurants smoky.

  29 May 2002