Beware: Classified documents don’t always hide state secrets, and security clearances are used as tools of manipulation and vengeance. Before Xerox, if you wanted to keep a copy of something,…| White House Chronicle
Ever want your very own hovercraft? It’s not that hard to make your own. Check out the video and then click HERE to get full instructions. The post Building a Hovercraft – Video appeared first on ScienceBob.com.| ScienceBob.com