[NatCh]

And the sixth:

6. Environmental impact matters. Ms. Brobst said she would now choose e-books over printed ones, not because she thought they were better but because they save trees.

"I realize how it's going to affect the environment," she said. "It's going to benefit everyone in the end."

A few comments in the university's surveys echoed that sentiment, and administrators said they were surprised at the degree to which such consciousness affected students's opinions.