"Cold feet" may halt toad march

New Stone Age artefacts unearthed
An archaeological dig in Russia has unearthed female figurines, carved tools, and a cone-shaped carving of unknown purpose.

70% deforestation cuts for Brazil
Brazil's environment minister has plans to reduce deforestation in the Amazon region by up to 70%, as UN climate talks begin.

Rare Bronze Age necklace is found
A rare amber necklace believed to be about 4,000 years old is uncovered in Stockport.

First inventory of life at poles
The first comprehensive inventory of the animals that live in a polar regions is completed, scientists report.

Britain 'needs deeper CO2 cuts'
More cuts in greenhouse gases by 2020 are needed if the UK is to play its part in combating climate change, an advisory body will say.