The faint radio signal that fills our universe is the echo of the beginning of the universe. Sarah Church describes how this is observed, what was learned from them, and what future experiments may yield. (June 27, 2007)
Chris Barty shares some of the work that is being done at at Lawrence Livermore National Laboratory surrounding the development of a new generation of gamma-ray sources called "MEGa-rays." (June 27, 2011)
Tsumoru Shintake talks about the XFEL/SPring-8 machine and the mechanisms it uses such as a single-crystal thermionic-cathode electron gun and an in-vacuum undulatory. (March 7, 2011)