There’s a crisis of access in this country,” says Richard Baraniuk, a computer and electrical engineering professor at Rice University. He’s talking about the rapidly increasing cost of college education, which includes not only tuition, but also room and board, class fees and, yes, textbooks. Estimates of how much students spend on textbooks in a given year vary widely, but most colleges’ financial aid websites peg the cost at about $1,000. Baraniuk thinks that cost should be reduced to zero. He’s been part of the open-source educational movement since 1999, when he grew frustrated with the book he was using in his electrical engineering class. He considered writing a book himself but had an epiphany as he learned more about the open-source operating system Linux. “I realized that we could take the same ideas–namely, modularity…and open-sourcedness, making it free and remixable–and apply that not just to software but to textbooks.