Agence France-Presse: Heatwaves, drought and floods that have struck the northern hemisphere for the third summer running are narrowing doubts that man-made warming is disrupting Earth's climate system, say some scientists. Climate experts as a group are reluctant to ascribe a single extreme event or season to global warming. Weather, they argue, has to be assessed over far longer periods to confirm a shift in the climate and whether natural factors or fossil-fuel emissions are the cause. But for some, such caution...
URL: http://news.yahoo.com/climate-vs-weather-extreme-events-narrow-doubts-000143938.html
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