Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.

 

 

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How Loud Are Your Mac's Fans?

When they get hot, Macs turn on various internal fans to keep components cool. The noise can be annoying, but just how loud is it? If you have an iOS device with a built-in microphone, you can download one of many free sound meter apps (search on decibel in the App Store) and see if you're subjecting your ears to a truly unreasonable noise level.

 
 

One Billion Downloads at iTunes U

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Apple has announced that downloads of iTunes U content have topped one billion. iTunes U doesn’t get much mainstream press, but it could be one of Apple’s most important projects, hosting over 2,500 courses (and thousands more private courses) from over 1,200 colleges and universities, plus another 1,200 K-12 schools and districts. Some iTunes U courses have as many as 250,000 students enrolled in them, and over 60 percent of the iTunes U app downloads originate from outside the United States. Put simply, iTunes U is an astonishing educational resource.favicon follow link