Earth and Environment

• Australian agency denies gagging researchers

  Furore over decision to pull scientist's carbon trading critique from journal.

  6 November 2009

• Oldest American artefact unearthed

  Oregon caves yield evidence of continent's first inhabitants.

  5 November 2009

• Aftershocks can last for centuries - Premium content

  Why earthquakes might happen in unexpected places.

  4 November 2009

• Carbon trading: How to save a forest

  Projects in Madagascar could provide a model for stemming deforestation. But first these efforts must deal with the poverty and political upheaval that threaten forests, reports Anjali Nayar.

  4 November 2009

• Q+A: Aftermath of a tsunami - Premium content

  A natural-hazards expert talks about surveying the destruction in Samoa.

  3 November 2009

• Brazil mulls major climate action - Premium content

  If adopted, the move would put the country ahead of other developing nations on emissions curbs.

  2 November 2009

• The melting snows of Kilimanjaro - Premium content

  Glaciers crowning Africa's tallest mountain could disappear within decades.

  2 November 2009

• Native American culture sowed seeds of its own collapse - Premium content

  Floods brought the Nazca to their knees — but they crippled themselves by over-farming first.

  2 November 2009

• Satellite launches to track the world's water - Premium content

  Soil moisture and ocean salinity set to be monitored from space.

  2 November 2009

• Air tides cause landslides - Premium content

  Pressure fluctuations can set slopes in motion.

  1 November 2009