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- Source:
National Geographic, Sep2004, Vol. 206 Issue 3, p56, 17p, 13 Color Photographs
- Additional Information
- Subject Terms:
- Subject Terms:
- Abstract:
Presents forecasts on the impact of global warming on glaciers, caves, and coral reefs worldwide. How periodic climate changes can be used to predict the future of the Earth's climate; Use of pollen grains collected from trees, grasses, and flowering plants to measure climate change; Measurement of the isotopes of uranium in stalagmites and the density of rings on corals and trees to determine age; Consideration of how samples taken from Greenland offer an abundance of records on past temperatures, precipitation levels, and atmospheric conditions; Climate changes which occurred during the last ice from about 70,000 to 11,500 years ago. INSET: Cutting to the Core.
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