May 03, 2013 Effective Teachers Everybody wants teachers to be knowledgeable, but there is little agreement on what kinds of knowledge are the most important.  Read More...

April 26, 2013 Magnetic Imaging of Living Cells Magnetic field measurement techniques have long enabled scientists to probe the internal structure of biological and material samples.   Read More...

April 19, 2013 Supernovae and the Origin of Cosmic Rays In the spring of the year 1006, one thousand and seven years ago this April, observers in China, Egypt, Iraq, Japan, Switzerland (and perhaps North America) reported seeing what might be the brightest stellar event in recorded history.  Read More...