About 90% of banknotes in the US carry traces of cocaine, research found - up 20% on levels revealed in a study two years ago.

Do you know that official Bulgarian banknotes were printed in New York, USA, in 1922? American Bank Note Company printed the artistic design of Bulgarians Dimitar Gyudjenov and Nikola Kozouharov. The ...

PROVIDENCE, R.I., Jan. 20, 2015 /PRNewswire/ -- Spectra Systems Corporation today announced that breakthrough work by the Company has resulted in the allowance of two key patents by the United States ...