Mon 4 May 2009
The Australian government says it will push back a planned carbon emissions trading scheme by a year until 2011.
Sun 3 May 2009
Satellites and spent rocket stages could soon deploy "sails" to guide them back to Earth to help clear the sky of space junk.
Sun 3 May 2009
Rome's ancient burial sites as never seen before
Sun 3 May 2009
Mexico appeals for fair treatment towards its citizens and products, as its officials say the flu outbreak could be stabilising.
Sun 3 May 2009
Evidence is building to support the notion that a huge wave crashed into the New York City region 2,300 years ago.