If any file can not be deleted, then you can use the program LockHunter, which removes the active connections of other applications to that file, which allow you to change or delete file.
The famous mule robot named BigDog can now handle and throw big and heavy objects thanks to its new addition in a form of an exceptionally strong robotic arm.
Not only that you can share files — like documents, images, and PDFs — without having to email them as attachments. You can share the whole folder containing the documents.
See these never before seen incredible looking images of unborn animals that were made with a combination of ultrasound, wee cameras and computer design.
If you put your computer into hibernation, the next time you turn it on, you'll get all your windows and programs open just the way they were before the shutdown.
You can add multiple desktops to the Mac OS X Mountain Lion by using Mission Control, formerly known as Spaces. Can be really useful if you are a busy multi-tasker.