FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY FRIEDRICH SAURER / SCIENCE PHOTO LIBRARY
Global warming, conceptual computer artwork. Penguin sunbathing on an island. Penguins are found in the Antarctic, and this image can represent the consequences of global warming for the world's polar regions. The island may also represent the threat posed to low-lying Pacific islands by a rise in sea level as the polar ice caps melt. Global warming is the term for manmade warming of the planet, caused by the uncontrolled emission of greenhouse gases such as carbon dioxide.
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