• GAO says EPA overstates its enforcement record.
• Climate change linked to tiger attacks and increases in waterborne diseases.
• Landfills making cash off carbon credits through what they were already doing.
• Panel recommends canal to divert water around Sacramento-San Joaquin Delta.
• Oregon Cascades hold a lotta water.
• Escaped lionfish devastating native species in Florida.
• French-speaking nations pledge to halve CO2 emissions by 2050.
• Appeal could hold up Exxon Valdez payments.
