The Look of Zero G

Here’s some videos about the Zero G flights described in Packing for Mars. The first video explains how what the plane does and how the parabolas create weightlessness. The second video is of people experiencing weightlessness. Just like in Mary’s experience, the crew yells “feet down!” to let people know to right themselves before gravity kicks back in.

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A Pictoral History Of Rockets

Take a journey through time as NASA traces the evolution of the rocket from 400 BCE to today.

https://www.nasa.gov/pdf/153410main_Rockets_History.pdf

Reversing the Chicago River

One of the things that Annin rails against in his book repeatedly as an example of poor water management is the Chicago River. While Annin does a great job explaining some of the history of the project, here’s more information on its history and future.

CityLab.com: A Century Later, the Expensive Lesson of Reversing the Chicago River

Illinois Periodicals Online: The Reversal of the Chicago River in 1900

Chicagoist: Chicago River Flow Re-Reversed To Alleviate Flooding

Helix: Reversing the Chicago River, Again

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