Extracting signals of elusive particles from giant chambers filled with liquefied argon
(PHYSorg.com Physics)

Neutrinos are subtle subatomic particles that scientists believe play a key role in the evolution of our universe. They stream continuously from nuclear reactions in our Sun and other stars but pass through almost everything-even our bodies and Earth itself-without leaving a trace. Scientists who want to study these peculiar, lightweight particles must build extremely sensitive detectors.