A nicely done You Tube presentation of Carl Sagan speaking about the earth.
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This entry was posted on August 6, 2008 at 9:55 pm and is filed under environmental science with tags activism, Biology, carl sagan, earth, ecology, Education, environmental science, environmentalism, politics, science, you tube. You can follow any responses to this entry through the RSS 2.0 feed.
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August 7, 2008 at 4:52 am
You’re welcome 🙂