As humans increase atmospheric carbon dioxide concentrations, oceans absorb some of the CO2. The resulting drop in ocean pH, known as ocean acidification, has been called climate change's "equally evil twin" by National Oceanic and Atmospheric Administration chief Jane Lubchenco. Coral reefs, which are an invaluable part of marine ecosystems and tourism economies, are threatened by ocean warming and acidification. At the 2012 International Coral Reef Symposium in Cairns, Australia, 2,600 scientists signed a petition calling for international action to preserve global coral reefs, reported the BBC. Noting that 25 to 30 percent of the world's reefs are already "severely degraded," the statement asserts that "climate-related stressors [represent] an unprecedented challenge for the future of coral reefs and to the services they provide to people." A recent report from the World Resources Institute found that the Coral Triangle, an important area from central Southeast Asia to the edge of the western Pacific with many reefs, is threatened at a rate far greater than the global average.
Winegrowers in France's Champagne region and scientists have already seen changes in the past 25 years, reported The New York Times last year. They have "noted major changes in their vineyards, including an increased sugar content in the grapes from which they make their wine, with a consequent decr...
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