Reuters
Environment
 - Britain urges divided G20 to reach climate deal
 - Genetic tests help track food web, climate change
 - Storm Ida revives, churns towards Gulf of Mexico
 - Forty leaders plan to attend climate talks: U.N.
 - EU to fight for tuna protection at global talks
 - Study suggests peat CO2 credits more valuable
 - Floods could threaten up to 750,000 in Kenya
 - Dry U.S. Midwest weather bodes well for harvest
 - China says studying weaker framework climate deal
 - Australia attacks Copenhagen critics
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