Biodiversity loss 'more critical' than climate change

'The problem of climate change can be corrected by stopping the emission of more carbon dioxide into the atmosphere. If you lose a species, it’s gone forever.' Picture: Marc O'Sullivan

More species are threatened with extinction than previously thought, with almost a third either gone or threatened with extinction in the last 500 years.

That is according to a major new global study in one of the foremost scientific journals, which combined data from thousands of international biodiversity experts.