The Kindle, a $359 gadget that can wirelessly download books, periodicals and blogs, has created interest in e-books at a time when book publishers worldwide are losing business. The latest version for $489 has a larger screen and enhanced functionality.

The COOL-ER uses E InkR, a new technology that gives you a screen with a "like paper" display, replicating the experience of reading a book. Using power only for "page turns" means that a single charge lasts for 8000 pages and unlike a book, the electronic display allows you ...