The creator of the popular webcomic "xkcd" uses line drawings and just ten hundred common words to provide simple explanations for how things work, including microwaves, bridges, tectonic plates, the solar system, the periodic table, helicopters, and other essential concepts. He uses line drawings and only the thousand most common words to provide simple explanations for some of the most interesting stuff there is. How do these things work? Where do they come from? What would life be like without them? And what would happen if we opened them up, heated them up, cooled them down, pointed them in a different direction, or pressed this button?
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