有关于一些新闻的英语报道.doc

/article/dn22240-organic-food-no-better-for-you-or-the-planet.html Organic food: no better for you, or the planet For organic farmers, bad news comes in twos this week. Organic crops seem to be no more nutritious than conventional ones, and are not necessarily great for the planet either. Organic farming eschews synthetic pesticides and fertilisers, and supposedly produces more nutritious food containing fewer harmful contaminants. Crystal Smith-Spangler of Stanford University in California and colleagues put together 237 studies comparing organic and non-organic food. They found little evidence that organic food was more nutritious. Conventional foods contained more pesticides but were within permitted limits (Annals of Internal Medicine, vol 157, p 348). Meanwhile, organic farmings green credentials have been questioned by Hanna Tuomisto of the University of Oxford and colleagues, who reviewed 109 papers. Organic farms were less polluting for a given area of land, but were often more polluting per unit of food produced. They did have better soil, though, and housed more species (Journal of Environmental Management, /h8v). An organic label is not a straightforward guarantee of the most environmentally friendly product, says Tuomisto. She advocates integrated farming, combining a range of existing systems. Advanced breeding technologies, combined with the best farming practices from organic and conventional systems, could have the best overall impact in terms of improving crop yield and sustainability, says Dale Sanders, director of the John Innes Centre in Norwich, UK http://www.guardian.co.uk/world/2012/sep/07/syria-daraya-massacre-ghost-town Syria crisis: Daraya massacre leaves a ghost town still counting its dead One of the first journalists to enter the Damascus suburb after the slaughter finds a desperate search for lost relatives Janine di Giovanni in Daraya guardian.co.uk, Friday 7 September 2012 18.31 BST A mass grave in Daraya. Estimates of the death t