Amazon has released the newest version of its Kindle DX e-reader, cutting the price from $489 to $379. The device has gotten mixed reviews as a textbook replacement in education. At one university, students complained about the lack of a touch screen and said that any device should have a browser built in. An executive from a textbook publisher said he does not expect e-readers to replace textbooks soon. "When you take away color from a biology textbook, it sort of kills it," he said.

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