The history of light (classic)
The Quick Take
How do you measure human progress? Light is the answer. For thousands of years, getting light was a huge hassle. You had to make candles from scratch. This is not as romantic as it sounds. You had to get a cow, raise the cow, feed the cow, kill the cow, get the fat out of the cow, cook the fat, dip wicks into the fat. All that — for not very much light. Now, if we want to light a whole room, we ju
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