Carbon flows through the environments of Earth, always has, always will. But how much? The amounts that humans continue to add with all our combustion for energy use are not only intensifying the heat increasing "Greenhouse Effect", but are also causing ocean waters to become more acidic, to the harm of all oceanic creatures, great and small. Watch the new short film, "Acid Test", by the Natural Resources Defense Council, to see what's happening and how we might choose to be kinder to ourselves in the near and longer term future.
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City Guide: Finding Birds in Belgrade
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