"The world's smallest laser, contained in a silica sphere just 44 nanometres across, has been unveiled. At about 10 times smaller than the wavelength of light, however, this is no ordinary laser, it is the first ever 'spaser'." So reports Nature magazine on a new invention. SPASER! Great nickname for a 7th-grader who looks cool on a skateboard even in braces. The colors are pretty. But why would they want to make a smaller laser? How's anyone supposed to destroy an approaching asteroid with that?