Think back on all the innovations you’ve learned about in this lesson. It is time to start thinking like a cultural historian. Imagine that you are preparing a time capsule of items representing scientific achievements from the 20th century. The people who dig up your time capsule many years from now will be unfamiliar with the importance of these innovations. They are living in a world made possible by innovations developed well after you. Your job is to prepare an explanation of 20th century science and innovation for the time capsule.

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