If you experience an Mac OS X program to freeze and you cannot exit it by clicking quit or using a keyboard shortcut, you can always force it to quit using the Activity Monitor.
This guy is a natural talent or the desktop flight simulators really are a great way to learn flying a real plane. He literally has zero hours of flight instructions and he has never been in a private plane.
Google just added amazing 360 panoramas of the Antarctic huts, early explorers used over a century ago. New images are a part of the World of Wonder project as an addition to Google Street View.
Another great TEDtalk about genetically engineering male mosquitoes to make them sterile, and releasing the insects into the wild, to cut down on disease-carrying species.