Antineutrino counters

New neutrino detectors debut

Faint flashes of light may soon reveal more about some of nature’s most ghostly particles — and maybe even new clues to an enduring mystery about the universe. A pair of neutrino detectors now up and running beneath a mountain in China, part of the Daya Bay Reactor Neutrino Experiment, count antineutrinos shooting out of nearby nuclear reactors.