Using keyboard shortcuts in the most advanced commercial tool for photo manipulation can really speed up your creative process. Do you know your Photoshop for Windows shortcuts?
The latest DNA analysis of around 7,000 years old male hunter-gatherer from Spain may shed some new light over the theory of why European's skin became lighter in color.
You got a .rar file and you don't how to open it, some one asked you to send him "a rar file" or you just need a good archiving software? Download and install WinRAR.
VirtualBox is a great free cross-platform virtualization program that enables you to run Windows, Linux, Mac OS X and other operating systems on you Windows, OS X or Linux computer.
Some installations or settings changes require you to restart your computer. In most cases you don't need to actually reboot it, you only need to restart the explorer.exe process.
Speculating about future is is most of the time futile, let alone about the distant 100,000 years kind of future. But we can always guess and if there is science involved we even might be onto something.
If you don't have installed program for editing PDF documents on your computer, then you can use web application PDFescape which allows you to edit your documents in your browser.