Climate change 'driving spread of crop pests'

Climate change is helping pests and diseases that attack crops to spread around the world, a study suggests. Researchers from the universities of Exeter and Oxford have found crop pests are moving at an average of 3km (two miles) a year. via Pocket http://www.bbc.co.uk/news/science-environment-23899019#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa