The Iron Curtain symbolized the ideological conflict and physical boundary dividing Europe into two separate areas during Cold War. Iron Curtain divided countries in the capitalist West and the socialist countries of East.
If you leave your computer running on a 24/7 basis you might be interested in determining the amount of uptime that has accumulated since the last reboot.
Crows are one of the smartest birds around, but they don't stand a chance against lightning fast and agile falcons. Watch this amazing video to learn how falcons hunt in mid-air from their very perspective.