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Now I Know

If you love learning about lots of random, interesting things, go sign up for Now I Know right now. Every day, Dan Lewis sends out an email about one really interesting topic.

Last week I learned that those white trails planes leave are called contrails, and they may actually help decrease global warming.

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Have any questions or comments about this post? Email me at chris@gomakethings.com or contact me on Twitter at @ChrisFerdinandi.

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