Detailed text transcripts for TV channel - MSNBC - 20120522:20:52:00
The first one. you know, we are, as you know, we're pumping a lot of carbon into the atmosphere. this is a very big and very rapid geochemical change in the earth. >> the carbon loading. >> the carbon loading, right. if you look back into our distant past, and i mean in the history of life on earth before humans, about 250 million years ago, there was an event that involved a huge release of carbon into the atmosphere. it involved vulcanism. a bunch of lava came out of the volcano andie v evaporated in a. if you go back even farther, you find that when the earth was dominated a anaerobic activ...
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