November 2004

• Rival DVD formats square up for battle

  Hollywood studios' choice may scupper Sony's chances.

  30 November 2004

• Brain imaging could spot liars

  Tests reveals patches in the brain that light up during a lie.

  29 November 2004

• Crop management gets vital role in transgenic debate

  Genetically modified strains have been evaluated in 'real' farming situations.

  29 November 2004

• Magnetic field benefits bacteria

  Weak magnetism shown to affect chemical reaction inside cells.

  26 November 2004

• Concentration hampers simple tasks

  Brain images show thinking about learning makes it more difficult.

  26 November 2004

• Scientists propose conservation parks on Mars

  International agreement could preserve important sites.

  26 November 2004

• Europe threatens to go for fusion alone

  EU says it could build a new reactor without Japanese support.

  26 November 2004

• Saturn's moons show spectacular contrast

  Space probe captures Tethys and Titan close-ups.

  25 November 2004

• Marrow cells spawn stomach cancers

  Study prompts rethink about what triggers a tumour.

  25 November 2004

• Cicada invasion feeds forests

  Insect broods kick-start forest ecosystems every 17 years.

  25 November 2004