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A Cherry Tree to Mars [pdf] (opens in new tab)

(patrickmccray.com)

39 pointstodayiamme9y ago1 comments

1 comments

1 comments · 1 top-level

andyjohnson09y ago

The blog post [1] that links to the PDF gives some context to Sagan's talk.

[1] http://www.patrickmccray.com/2013/04/30/cherry-trees-to-mars...

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