Muons continually bombard the ground at a known rate and angular distribution. As muons lose energy when passing through matter, their flux is attenuated depending on the integrated density along ...

Cosmic rays and lasers have revealed that deep underneath the city streets of Naples, Italy, lie the remains of the Greeks who originally settled the area, as well as the catacombs of Christians who ...

The Shanghai Outer Ring Tunnel runs across the Huangpu River, with areas covered by mucky soil and silty clay (top). The researchers placed a portable muon detector within the tunnel to monitor muon ...