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"Friday, December 14th, 2007 Coral in Crisis Bleached corals on coral reef on southern Great Barrier Reef in January 2002. Coral bleaching primarily affects reef building corals when conditions get too warm. Image © Science The world's coral reefs are in great danger, threatened by climate change and rising carbon dioxide levels. In an article published in the journal Science, researchers provide provide three different scenarios for the fate of reef-building corals worldwide as they face higher concentrations of atmospheric carbon dioxide and the related ocean acidification that slows coral calcification, the process needed for a reef to grow. Increasing CO2 levels have the potential to greatly shift the chemistry of ocean waters, threatening the existence of most coral species. "

How important are museums, TV shows and after school clubs to teaching kids science? Ira Flatow and guests look at "informal science education" and what researchers are learning about learning science. Plus, what's the best way to keep undergraduate science majors in science?