Author: Lorrie P. Wilder

Terbium (Tb) is a soft, malleable, silvery white rare earth metal. It is primarily used in solid state devices, crystal stabilizer in fuel cells, sensor devices and in sonar systems. 70 % of the worl …

The political change and unrest that have swept through the Middle East and North Africa since early 2011 are likely to have profound consequences for the pursuit of long-standing U.S. policy goals i …