Impacts www.reuters.com U.N. warns world must take 'unprecedented' steps to avert worst effects of global warming Society would have to enact "unprecedented" changes.
Impactsc2.staticflickr.com Scientists to publish report on feasibility of climate targets on Oct. 8 The world's leading climate scientists this week are preparing the final version of a cornerstone United Nations report to assess whether global temperatures can be kept in check this century to prevent the most damaging effects of global warming.
