From John Bamford: BIODIVERSITY COP 15 Earth could face a mass EXTINCTION by 2100: Supercomputer predicts more than a quarter of species will die by the end of the century New study shows extinction will wipe out over a quarter of world biodiversity Experts blame land use, climate change and 'over-exploitation of resources Research published during the COP15 UN Biodiversity Conference in Canada A MASS EXTINCTION REQUIRES OVER 50% SPECIES LOSS. Having said that, 25% is bad enough New modelling shows land use and climate change could wipe out more than a quarter of world biodiversity. Earth will lose some 10 per cent of its animals and plants by 2050, rising to 27 per cent by 2100