Video: Pacific Coast Science and Learning Center - The Natural Laboratory: Ocean Acidification: Where will all the seashells go? - May 12, 2011

Point Reyes National Seashore

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More than a hundred thousand marine species build their bodies using calcium carbonate. This incredible diversity of life evolved over millions of years, as animals figured out ways to pull calcium and carbonate ions from the water to build shells and skeletons. But all of this is changing. Our addiction to fossil fuels and the billions of tons of carbon dioxide we're pumping into the atmosphere each year may be undoing millions of years of evolution in a geological blink of time.