Agence France-Presse: Global warming is good news for trees, which are thriving in higher temperatures and longer growing seasons, but bad news for ducks and other waterfowl, whose wetland habitat may dry up and disappear, two studies show. A study by researchers at the Smithsonian Environmental Research Center (SERC) in Maryland indicates that higher temperatures, longer growing seasons and increased levels of carbon dioxide brought by climate change are helping trees in temperate climates to grow …