"Our Electronic Flight Bag program has a significant positive environmental and cost-savings impact," said David Campbell, American's Vice President – Safety and Operations Performance. "In fact, removing the kitbag from all of our planes saves a minimum of 400,000 gallons and $1.2 million of fuel annually based on current fuel prices. Additionally, each of the more than 8,000 iPads we have deployed to date replaces more than 3,000 pages of paper previously carried by every active pilot and instructor. Altogether, 24 million pages of paper documents have been eliminated."

I've been pitching the convenience benefits of e-books to students for a while, but they generally don't have 35 pounds of paper books to haul around. These are staggering savings in fuel terms.