How to restart an Apple laptop with a sealed battery?

As a last resort, people wanting to restart a frozen laptop usually need to remove the battery for a while and then put it back in place. But that solution may not work with the new Apple's models whose batteries come sealed and therefore can't be removed. In such situations, there is two ways to go about the problem.
One consist of holding the power button continuously for 5 to 10 seconds, wait a few seconds and then press the power button again; doing so, should restart the laptop.
The second way to restart a frozen Mac laptop with a sealed battery, is to press Control and Command keys simultaneously with the power Button.

CourseSmart LLC offers e-texbooks free for subscribers, on iPod.

The Wall Street Journal is reporting that CourseSmart LLC , an e-textbooks provider for college students with more than 7,ooo titles, is making its collection available on Apple's iPhone and iPod Touch, free for its subscribers.
Typically, students rent an e-book for 180 days and during that period, they will have full access to their textbooks, can consult their digital notes and do researches for a specific word or phrases right from their iPod or iPhone.
At the end of the subscription period, students will lose access to the titles. But at nearly 5o% savings per tittle for 18o days which is typically the length of a semester, that is not a bad trade off considered the short shelf life of a physical book and the hassle of figuring out what to do with it at the end of a term.