Carl Sagan’s Heaven and Hell [Video]

In the following video, Carl Sagan makes a rather compelling argument on why humanity needs to take action on the global warning phenomenon that plagues our planet. Enjoy!

[Youtube]

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4 Responses to Carl Sagan’s Heaven and Hell [Video]

  1. Just one thing: Venus is a hell of a lot closer to the sun than we are.. Isn't that playing a role?
    Same goes for Mars: it's full of sand agreed, but it's a lot further from the sun. And it has a very thin athmosphere.