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Neil deGrasse Tyson @neiltyson
.@JDynes82 What % of Earth's history has life existed, you ask? After Earth cooled: 95%. Yup, humans are latter-day blips — PolitiTweet.org
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Wed Dec 21 17:15:00 +0000 2011
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Likely AvailableNeil deGrasse Tyson @neiltyson
.@JDynes82 What % of Earth's history has life existed, you ask? After Earth cooled: 95%. Yup, humans are latter-day blips — PolitiTweet.org