We have had several requests for an electronic version of our virtual globe book. I'm happy to say that it is now available on VitalSource. You can read it on your desktop or transfer it to your iPhone, iPad, or iPod Touch. This electronic version is discounted, and there are rental options that cost even less. Pretty cool.
Update: Unfortunately, VitalSource only accepts credit cards from the US and Canada because of rights issues with some publishers. Our publisher, CRC Press, is working on a new website that will solve this problem. We'll keep you posted.