January 2009

• Briefing: Halting the African armyworm - Premium content

  Liberia prepares for second plague of caterpillar pests.

  30 January 2009

• Briefing: Clean-energy agency recruits its founding members - Premium content

  Nations have begun to hammer out the mandate for the International Renewable Energy Agency.

  30 January 2009

• MS stem-cell trial shows promise - Premium content

  Multiple sclerosis treatment seems to reverse symptoms.

  30 January 2009

• World's oldest crystals get protection - Premium content

  Australian geoheritage reserve will save ancient zircons from abuse.

  30 January 2009

• Fake finger reveals the secrets of touch - Premium content

  Fingerprints help amplify vibrations detected by nerves deep under the skin.

  29 January 2009

• Feather colour indicates survival strategy in birds - Premium content

  Colourful plumage linked to immune response in tawny owls.

  29 January 2009

• Short RNAs protect chemical memory of genes - Premium content

  Epigenetic changes to plant DNA preserved through successive generations.

  29 January 2009

• Exoplanet gets hot flashes - Premium content

  Eccentric orbit creates climate extremes

  28 January 2009

• Laser facility flickers into life - Premium content

  US nuclear-fusion project prepares to mimic the Sun.

  28 January 2009

• Cutting out the chemicals - Premium content

  The international treaty drawn up to tackle ozone-destroying substances is gearing up to curb greenhouse gases. Jeff Tollefson reports.

  28 January 2009