greenhouse gases, specifically carbon dioxide (CO2). These emissions are
released into the atmosphere, but much of it gets absorbed into the world's
oceans. A new study, published in the Proceedings of the National Academy of
Sciences, looked at prehistoric ocean sediment and found a disturbing trend.
Periods of high CO2 concentrations have historically coincided with mass
extinctions of marine organisms.
Source: http://news.feedzilla.com/en_us/stories/society/environment/91906634?client_source=feed&format=rss
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