Scientists are exploring the whats and what-ifs involving natural methane releases from newly discovered unusual sink holes in remote areas of the Siberian arctic.
A woman who visited a "heave mound" on Siberia's Arctic tundra before it exploded to form a huge crater said it was "as if the earth was breathing" and that the ground was shaking.
The PUC's Pipeline Safety Division announced it is investigating reports of subsidence near several pipelines located near the site of construction work on the Sunoco Mariner East 2 Pipeline in Middletown Township.