Water vapour rises out of the cooling towers of the lignite-fired power plant Niederaussem of German RWE AG energy company west of Cologne in this March 14, 2007 file picture. German Chancellor Angela Merkel on July 3, 2007 rejected industry criticism of her government's plans to reduce greenhouse gases by up to 30 percent by 2020 and dashed their hopes of a deal to prolong the use of nuclear power. Picture taken March 14, 2007.
REUTERS/MICHAEL DALDER