"The legendary tumbleweed is really a nurse crop that protects the growth of prairie grasses under its shade, and then sacrifices itself and blows away."

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One of the skills of a journalist, though, is to find people who can teach him what he needs to know. So instead of taking courses, I've been very lucky in that I found teachers - scientists, especially - who were willing to teach me what I needed to know, whether it was about genetically modified crops or how photosynthesis works, and so on. I just find my teachers and don't have to pay for my education.

— Michael Pollan