Truly amazing work by the NYC Grid guys creating images composed of two images at the exactly same location only decades or sometimes even century apart.
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.
FLAC is an audio file that enables you to play songs without the lost of sound quality unlike MP3 files for instance. I will show you what you need to do in order to play FLAC in Windows 7 - Media Player 12 .