More than $750 billion in U.S. currency is in circulation: around $60 million of it is fake. As scanners and printers become more powerful, the Department of Treasury must try to out-tech the bad guys with increasingly sophisticated money. Meanwhile, most of us just spend our Lincolns on foot longs and never know the difference. Our latest infographic explains the state of counterfeiting and what we’re doing about it today.

Today when we have all those electronic devices which are making our everyday lives easier and less painful, we are not aware of the fact how it would be hard to live without those inventions.
The period between the World War I and World War II was a period of huge rise in number of military technology researches and inventions...

Humans are intelligent creatures who are capable to bring out some of the most complicated inventions. Probably everyone has done some minor inventing job in some period of his life. There are two kind of inventions: effective inventions and complicated ones.
No matter how those inventions which can be seen in following photos are ridiculous and crazy, you have to consider that once they were pretty fashionable thing, especially...