A federal judge has ordered DTE Energy and three of its subsidiaries to pay $100 million in penalties over pollution from a facility on Zug Island.

Sulfur dioxide (SO 2) is a pungent, toxic gas that is the primary product of burning elemental sulfur. It exists widely in nature, mostly from volcanic activity and burning fossil fuels. It is found ...

China's sweeping efforts to clean up its air have delivered one of the biggest public health success stories of recent ...