An underground detector in China will sniff out mysterious ghost particles called neutrinos

Underneath a granite hill in southern China, a massive detector is nearly complete that will sniff out the mysterious ghost particles lurking around us. The Jiangmen Underground Neutrino Observatory will soon begin the difficult task of spotting neutrinos: tiny cosmic particles with a mind-bogglingly small mass. The other two, based in the United States and Japan, are still under construction.