Sure, humans changed the world by coming up with film, computers and other tech, but how have those inventions changed us? Materials scientist Ramirez explores how eight innovations came into being and ultimately shaped how we communicate, travel and even sleep. The scientific method of observing, developing a hypothesis, testing it and revising as needed has survived centuries for a reason: It works. And, as bona fide rocket scientist Varol shows, that approach — plus boundless curiosity — is handy whether you're designing a Mars lander or figuring out what to have for dinner.
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