A new sustainable electric car designed for city or town use is the result of a £9m investment programme. Full story...
Brazil hosts a regional summit on how to save the Amazon basin from continuing deforestation and climate change.
Unusually warm and cold spells in climate history are linked to how oceans responded to temperature changes, a study says.
China unveils its first firm target for limiting greenhouse gas emissions, two weeks before the Copenhagen climate summit.
Researchers have demonstrated a device that can kill off superbugs such as MRSA in just seconds - and could help with body odour.
The government needs to update its guidance on the impact of noise from wind turbines, a campaign group says.
The last remaining population of Siberian tigers has declined significantly, according to a recent survey.
The field of "spintronics" - a future means of computing - is shown to work at room temperature for the first time.
A warning is issued to ships in the southern Pacific after more than 100 iceberg were spotted drifting towards New Zealand.
President Obama is to pledge to cut greenhouse gas emissions in several stages, including 42% by 2030, officials say.
Astronomers have devised a web-based game that could help work out the basis of galactic collisions.
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